オプトロンサイエンス List of Products and Services

Diffusion-bonded crystals are made from one laser crystal and one or two undoped materials. They are bonded using an optical connection method and further joined at high temperatures. Diffusion-bonded crystals can suppress the thermal lens effect, making them stably used in high-power laser applications.

• Other physicochemical equipment
• others

It is used for second harmonic generation applications of laser light above 1μm. It is also used for OPO applications excited by a 1064nm laser. It is also used as electro-optic and acousto-optic devices.

• Other physicochemical equipment

■Widely used in industrial equipment, medical equipment, and experimental equipment ■In low-power Nd:YAG lasers, it is commonly used as a crystal for harmonic generation ■KTP crystals are also used as electro-optic devices (modulators)

• Other physicochemical equipment
• others

These crystals are used for generating the second, third, and fourth harmonics of YAG lasers at room temperature. In addition to this, they are also used as electro-optic devices (modulators, Q-switches, etc.).

• Other physicochemical equipment
• others

It is used for second harmonic generation in the visible to near-infrared light range, as well as for OPO, OPG, and OPA applications with ultrashort pulse lasers, and in frequency mixing (SFM). It is also one of the few crystals that can be used for second harmonic generation and frequency mixing below 500 nm due to its strong UV light capabilities.

• Other physicochemical equipment
• others

■ Widely used in laser applications in the ultraviolet and visible regions ■ Broad transmission range of 160 to 2600 nm ■ High uniformity with low content ■ Used for applications such as second harmonic generation due to high nonlinear optical effects ■ High damage threshold ■ Minimal walk-off ■ Type 1, Type 2

• Other physicochemical equipment
• others

■Housed in a 3U high 19-inch rack. ■Output voltage adjustment is done using the potentiometer on the front panel. ■Additionally, adjustments can be made via the serial port and analog control. ■Equipped with "safety and monitoring" functions.

• Switching Power Supply
• power supply

All of these driver heads can be used stably not only for research applications but also for medical applications, as EMC testing has been conducted.

• Other power sources
• Switching Power Supply

【485 Series LaserPak】 - Equivalent quality to benchtop type - Has an analog control interface - Equipped with RS232/USB interface 【585 Series TECPak】 - Equivalent quality to benchtop type - Has an analog control interface - Equipped with RS232/USB interface 【586 Series TECPak】 - Equivalent quality to benchtop type - High power TEC controller 【685 Series ComboPak】 - Equivalent quality to benchtop type - Laser controller & TEC controller (for low power)

• Other power sources
• Other electronic parts

At Aroyo Instruments, we offer a variety of high-precision laser diode drivers, temperature controllers, and mounts for laser diodes and LEDs at reasonable prices.

• Peltier element
• Other physicochemical equipment
• Optical Experimental Parts

■ Equipped with features such as photodiode, modulation input, programming PD bias, RS-232, and USB computer interface. ■ For laser sources, it is equipped with protection circuits, interlocks, and electrostatic protection.

• Other power sources

■Multi-purpose use ■Cost-effective and high performance ■Adjustable PID settings ■Computer interface, high-precision temperature, current value management, and voltage measurement available

• Other power sources

■All models employ a photocoupler in the circuit to isolate the LD from other circuits, preventing ground loop issues and enhancing safety. ■They are equipped with standard modulation input circuits, programmable PD bias, and computer interfaces such as RS232 and USB. ■The drivers incorporate various laser diode protection circuits, interlocks, ESD protection circuits, and current and voltage limiters. *These circuits have unique features not found in competing products.

• Other power sources

■Acousto-Optic Modulator - AO Modulator (AOM) - - Supports a wide wavelength range from deep ultraviolet (230nm) to far infrared (11μm) - Analog intensity modulation / Digital On-Off modulation / Angle modulation / Frequency modulation - Center frequency: 40 to 350MHz - Bragg diffraction, Raman-Nath diffraction - Single beam, dual beam, multi-channel, driver built-in ■Acousto-Optic Q-Switch - AO Q-Switch - - Wavelength range: 1047 to 1064nm - Crystal materials: Fused silica, quartz, SF10, SF57, TeO2 - Effective aperture: 1.0mm to 6.0mm - Damage threshold: >250 to >500MW/cm² - Suitable for DPSS lasers and lamp-pumped lasers (such as Nd:YAG lasers and Nd:YVO4 lasers) ■Acousto-Optic Frequency Shifter - AO Frequency Shifter (AOFS) - - Supports a wide wavelength range from ultraviolet (300nm) to far infrared (11μm) - Compact size - Active aperture: 0.2 to 2mm - Center RF frequency: 10 to 350MHz - Up shift / Down shift

• Other physicochemical equipment
• Laser Components

■Green Light Holography Material VRP-M - Silver halide with recording performance for both pulsed and CW lasers - Average particle size: 35–40nm / Resolution: >3000 lines/mm / Sensitivity wavelength range: 488/514/526/532nm ■Red Light Holography Material PFG-01 - Silver halide for CW recording - Average particle size: 40nm / Resolution: >3000 lines/mm / Sensitivity wavelength range: 600–680nm ■High-Quality Red Light Holography Material PFG-03M - Silver halide plate for recording color reflection holograms with ultrafine particles - Average particle size: 8–12nm / Resolution: >5000 lines/mm / Sensitivity wavelength range: 633/647nm ■Panchromatic Holography Material PFG-03C - Silver halide for recording reflection holograms with ultrafine particles - Average particle size: 8nm / Resolution: >5000 lines/mm / Sensitivity wavelength range: up to 700nm (457/514/633nm) ■Blue & Green Light Holography Material PFG-04 - Plate for recording phase reflection holograms with long-life heavy chromium acid gelatin emulsion - Resolution: >5000 lines/mm / Sensitivity wavelength range: up to 514nm (457/488/514nm)

• Other polymer materials

■ Unlike desktop amplifiers, it eliminates the deterioration of the S/N ratio caused by cable capacitance and noise pickup. ■ Signal processing and measurement after the preamplifier do not affect the S/N ratio. ■ While minimizing the narrowing of bandwidth, it achieves significantly higher gain and ultra-low noise compared to conventional current pressure converters. ■ No special connections or frequency corrections are required. ■ Hand width and frequency response are unaffected by source capacitance up to 10nF, preventing gain peaking.

• Amplifier

- Ideal for a wide range of applications that require converting small currents into effective voltages, such as photodiodes and lock-in systems. - Adjustable bias voltage/offset. - The transimpedance gain is also variable, ranging from 10^3 to 10^11 V/A. - Promises maximum speed even at high gain settings. - The 3dB bandwidth at the maximum gain setting of 10^11 V/A is 1.2 kHz, with a rise time of 300 μs. - AC/DC is adjustable, and control methods can be selected from manual operation or opto-isolated remote control. - The case is a sturdy and compact EMI shielded enclosure that protects the product from noise and other interferences. - No frequency correction or special connections are required. - Comes with a removable 10 Hz low-pass filter to eliminate bandwidth noise. - Convenient for accurate and low-noise DC current measurements down to femtoamperes.

• Amplifier

In many cases where high-frequency products are used, issues such as unwanted vibrations, imperfections in ground shielding, nonlinearity, gain peaking, and bandwidth reduction due to insufficient amplifier design can arise. However, Femto's current amplifiers are designed to adequately address these problems. They prevent gain peaking, vibrations, and significant bandwidth reduction regardless of the signal's source parameters or wiring, with capacitance up to 2nF. When capacitance is a few pF, the bandwidth of high-frequency current amplifiers significantly decreases; however, Femto's high-speed current amplifiers are not affected by this limitation and can handle a wide range of capacitance. For precise offset and bias control, they come equipped with two trim pots for flexible use. Input offset current correction can be adjusted over a wide range, fully maintaining dynamics even from signals with large DC components. The bias output voltage can be adjusted within -12 to +12V using this bias trim pot.

• Amplifier

- Ideal for DC/AC measurements up to 200MHz, time-resolved measurements down to nanoseconds, and preamplifiers for high-speed detector signals. - Gain: Variable in the range of 102 to 108 V/A. - AC/DC coupling can be changed, and offset for baseline correction as well as bias voltage for high-speed photodiodes can be adjusted. - Features a good balance between gain and bandwidth. - When the gain is set to 103 V/A, it has a high 3dB bandwidth of 200MHz. - The cutoff frequency on the high-frequency side when the gain is set to 108 V/A is 200kHz. - Both manual operation and remote control are possible. - The case is a sturdy and compact EMI shielded enclosure. - Comes with removable 10MHz and 1MHz low-pass filters to eliminate bandwidth noise.

• Amplifier

■ Input noise: minimum 0.2 fA/√Hz * Peak-to-peak: 0.4 fA ■ Gain can be manually or remotely changed from 10^4 to 10^13 V/A ■ Covers a wide dynamic range of over 240 dB, capable of handling current values from sub-fA to mA ■ Compact housing allows for installation near the signal source, reducing noise from long cabling ■ Various filters are built-in to optimize the amplifier's bandwidth according to the signal state, allowing for S/N ratio and measurement speed settings based on the application ■ Even when the gain is set to maximum, it maintains sufficient measurement speed to measure femtoampere currents in real-time ■ At femtoampere levels, measurement errors and baseline shifts due to drift or offset currents are more likely to occur, but the DDPCA-300 excels in long-term stability and minimizes drift to the extreme.

• Amplifier

Broadband Light Source Module (ASE) - Optical Communication Wavelength Band ■ High output, high output stability, and high uniformity of power density ■ Supports analog/digital modulation ■ Custom consultations available

• LED Module

■YL-120【High-Power Compatible Goggle-Type Laser Protection Glasses】 - Type compatible with high-power laser light - A model with a high damage threshold designed for high-power laser light, featuring a combined glass type ■YL-130【Goggle-Type Laser Protection Glasses】 - A goggle type with high safety - Ergonomically designed elastomer cushion for a comfortable fit on the face - Wide integrated spherical lens for a broad field of view ■YL-250【Reinforced Glass Type Laser Protection Glasses】 - Lenses are of the complete absorption type ■YL-290【Dual Eye Type Laser Protection Glasses】 - High protective cover frame - Wide temples designed with protection in mind ■YL-335【Over Glass Type Laser Protection Glasses】 - Soft nose pads and cushion bars with good cushioning properties - Temples with good protective performance ■YL-717【Laser Light Shielding Protection Glasses Compatible with Large Glasses】 ■YL-760 - High-function model with adjustable features

• Glasses and goggles

■Wavelength: 1200–1700nm ■Wide wavelength range and high output lineup to meet needs ■Telcordia/ISO9001:2008 compliant ■RoHS compliant ■High TE/TM ratio (possible >20dB) ■Low interference noise ■Low spectral ripple (0.1–0.2dB) ■PMF option available

• LED Module

■Even when changing the gain settings, the bandwidth (100/200MHz) remains constant, featuring excellent gain flatness, low noise, and low offset drift, making it a very high-performance amplifier. ■Since the bandwidth remains constant even with different gain settings, the rise time of the pulse hardly changes (within ±10%). ■Ideal for accurate and reliable time-resolved measurements. ■Adopts a multi-stage design, allowing for the avoidance of using multiple amplifiers that could lead to dynamic limitations.

• Amplifier

■The gain curve is logarithmic, so weak signals are amplified strongly, while larger input signals are amplified relatively weakly. ■Ideal for high-speed and high-dynamics pulse measurements that require signal compression. ■Input voltage noise is 2nV/√Hz.

• Amplifier

■Due to the built-in Bias-T, a high S/N ratio can be achieved for applications requiring high CW power, such as shot noise limit spectroscopy and heterodyne measurements. ■The housing is compact and features M4 screw holes, making it easy to integrate into bench systems. 【HSA-X Series】 ■A very compact model that comes standard with a Bias-T and SMA connector for signal output. ■Gain: 20dB / 40dB 【HSA-Y Series】 ■A model that adds one DC monitor output and one signal output to the HSA-X. ■The DC monitor output is useful for detector alignment, control, or background measurements. ■The signal output allows for triggering and signal control. ■Gain: Selectable from 20 / 40 / 60dB.

• Amplifier

■ Gain can be set via a local selector or optical isolator, or through a remote control interface. ■ The frequency response is independent of gain, and since the variation in rise time is small even when changing the gain setting, accurate time-resolved measurements are possible. ■ The frequency response is very flat across the entire frequency range, allowing for pulse or transient measurements without gain peaking.

• Amplifier

■ The output offset can be adjusted, allowing for true DC coupling, which avoids decoupling due to the oscilloscope's AC settings and suppresses measurement undershoot and baseline. ■ The minimum input noise is low at 0.9nV/Hz, enabling a high S/N ratio in small signal amplifiers. ■ It can accurately amplify pulses with varying widths from microseconds to milliseconds, such as digital codes and transients. ■ To achieve optimal S/N performance, an amplifier with sufficient bandwidth corresponding to the required signal bandwidth is necessary. ■ If the bandwidth is unnecessarily high, wideband noise increases. ■ The HVA series includes three models with different cutoff frequencies, allowing you to choose the optimal model based on measurement conditions.

• Amplifier

■ A lock-in amplifier module that is reasonably priced compared to conventional products, while being easy to use and high-performance. ■ Operation method: Both manual operation via switches on the front panel and remote control via a digital interface are possible. ■ When using a standard PC with a digital I/O card, parameters such as sensitivity, time constant, and phase shift can be easily set, making it ideal not only as a general-purpose laboratory unit but also for integration into complex or automated testing systems.

• Amplifier

- Settings such as phase and time constant can be operated directly via a local switch or externally using a standard I/O computer board. - The driving frequency is variable and determined by external reference signals such as the synchronization signal of the optical chopper or the modulation signal of the laser. - Current/voltage input is possible. - Current input is ideal for amplifying signals from high-impedance sources such as photodiodes or PMTs. - Voltage input is convenient for measuring weak signals from low-impedance sources such as pyros or coils.

• Amplifier

■ Sensitivity, time constant, and phase shift can be set via the front panel switch or remote operation through a digital interface on a PC. ■ A signal filter can be added via a jumper on the board. ■ Placing a PC card directly inside a computer case makes it difficult to measure weak signals with high sensitivity due to interference from electromagnetic fields. ■ Femto offers a 19" board compatible with EMI shielded cases. ■ By using it within an EMI shielded case, reliable shielding can be achieved, and noise can be suppressed.

• Amplifier

■Flexible glass capillary tubes or plastic tubes with an inner silver thin film lining ■Broad characteristics are obtained in the terahertz region, enabling energy transmission at a single wavelength as well as spectral applications.

• Other optical parts

■ For the fundamental wave and 2nd and 3rd harmonics, fibers coated with high-durability silver are suitable. ■ For the 4th harmonic, fibers coated with aluminum are suitable. ■ For femtosecond pulses, transmission is also possible with slight pulse stretching.

• Other optical parts

Depending on the application, interior coatings of aluminum, silver, and polymer are applied.

• Other optical parts

■Excellent chemical stability, mechanical durability, and heat resistance ■Compatible with high-power lasers for medical and industrial applications, including dental lasers, both pulsed and continuous wave (CW) oscillation.

• Other optical parts

■A combination of a saturable absorber mirror (SAM) and an output coupler. ■By using SOC, it is possible to arrange self-oscillating passive mode-locked Q-switched diode-pumped solid-state lasers or fiber lasers in a very simple layout.

• Other optical parts

■Both sides of the SA are coated with anti-reflective (AR) coating to match the wavelength of the laser. ■The SA is a nonlinear absorber, and its transmittance increases with the increase in pulse energy. ■The typical saturation fluence of the SA is higher than that of the SAM. ■When the relaxation time is less than 100 ps, the SA returns to its ground state.

• Other optical parts

■SAM (Saturated Absorption Mirror) consists of a mirror and a saturated absorber in front of it. ■The single crystal layers of the mirror and the absorber are grown on a GaAs wafer. ■It is a nonlinear mirror, and the reflectivity increases with the increase in pulse energy. ■A self-starting passive mode-locked diode pump laser with a very stable pulse repetition rate has been realized. ■It is prepared for solid lasers and fiber lasers in a wide spectral range from 800 nm to 3 µm. ■Using SAM as a nonlinear optical element, Q-switched microchip lasers can also be realized.

• mirror

- More general applications include color enlargers and copiers as optical balance filters. - It may also be useful for applications where it is desirable to separate incident energy from two or more light beams. - The spectral curves below are displayed at normal incident angles, but for many applications that involve combining colors, it is preferable to use them in reflection mode at an incident angle of 45°. - The stringent manufacturing of these filters utilizes durable insulating films that show no degradation over years of use. - They are characterized by being very stable, with minimal efficiency loss over time.

• Other optical parts

■Used for separating the wavelength bands that transmit at specific wavelengths and those that reflect. ■These edge filters shift the edge wavelength bands slightly depending on the angle of incidence, allowing for the adjustment of the cutoff wavelength by utilizing this principle.

• Other optical parts

■ Standard Band Pass Filter (Standard Product) - Soft coating - Wavelength: 193 to 1665 nm - Bandwidth: 1 to 100 nm - Blocking: OD4, UV-FIR - Size: 12.5 mm / 25 mm / 50 mm ■ Semi-Custom Band Pass Filter - Hard coating - Wavelength: 214 to 2400 nm - Bandwidth: 0.15 to 100 nm - Blocking: 1 μm, FIR - Size: 12.5 mm / 25 mm / 50 mm * Required information for inquiries: Center wavelength, bandwidth, block wavelength, quantity ■ Hard Coated, Narrow Bandwidth Band Pass Filter - Hard coating - Wavelength: 334 to 1550 nm - Bandwidth: 10 nm - Blocking: OD4 (average), Blocking 200 to 1200 nm (for 1550 nm up to 1800 nm) - Size: 25 mm ■ Hard Coated, Broadband Width Band Pass Filter - Hard coating - Wavelength: 345 to 785 nm - Bandwidth: 80 to 300 nm - Blocking: OD4 (average), Blocking to be checked - Size: 12.5 mm / 25 mm / 50 mm

• Other optical parts

■Metallic ND Filter - Optical density is achieved by depositing a metal alloy onto a substrate selected for the desired wavelength range. ■Absorptive ND Filter - Manufactured using Schott NG glass, it strictly relies on the absorption effect of the glass to achieve the desired attenuation level. *These ND filters are also available for sale as a set. *All sets come with a storage wooden box.

• Other optical parts

■IR Broadband AR Coating - AR Coating: 2–14μm, Germanium - Size: 25mm / 50mm - Wavelength: 2000nm–14000nm (Broadband compatible) ■IR Bandpass Filter - Standard products are available, as well as custom wavelength bandpass filters tailored to your needs - Substrate: Sapphire / Germanium - Wavelength: 2000nm–14000nm (Broadband compatible) ■IR Windows & Substrates - Substrate: Silicon / Germanium / Sapphire / Fused Quartz, etc. - Size: 25mm / 50mm - Wavelength: 2000nm–14000nm ■IR ND Filter - Metallic coated infrared ND filter (metal coating processed on Germanium substrate) - Attenuation effect for broadband spectral sources - Size: 25mm / 50mm - Wavelength: 2000nm–14000nm *9-piece ND filter set available (including storage box)

• Other optical parts

SLED (Super Luminescent Diode) is a surface-emitting semiconductor laser that combines the high output of laser diodes with high brightness and low coherence.

• LED Module

- No adjustment of offset voltage is required even at a gain setting of 100dB, making it ideal for DC coupling. - The gain setting and amplifier bandwidth, which are very important parameters for measuring high-speed signals and pulses, are independent of each other. - The bandwidth remains constant at 100kHz with a 3dB maximum gain setting specified. - The cutoff frequency can be adjusted up to a maximum of 1kHz, which helps reduce wideband noise. - Parameters such as gain setting and bandwidth can be easily and directly operated via local switches. - The selected gain setting is indicated by an LED. - TTL bits corresponding to each switch are available for remote operation, and mixed operations are also possible. - Six different models are available, including single-ended or true differential inputs, bipolar or FET.

• Amplifier