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amplifier Product List

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Gain Fixed High-Speed Gigahertz Amplifier (HSA Series)

Gain Fixed High-Speed Gigahertz Amplifier (HSA Series)

Low noise with high gain and wide bandwidth (up to 2GHz), ideal for time-resolved measurements using ultra-fast photodetectors.

■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.

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Wideband Voltage Log Amplifier HLVA-100

Wideband Voltage Log Amplifier HLVA-100

Log amplifier featuring a high dynamic range (up to 80dB), DC-coupled input, and short rise/fall times (5ns).

■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.

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Wideband Voltage Amplifier (DHPVA Series)

Wideband Voltage Amplifier (DHPVA Series)

The 100/200MHz DHPVA is a high-frequency amplifier with variable gain.

■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.

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High-speed gain variable current amplifier (DHPCA)

High-speed gain variable current amplifier (DHPCA)

The "DHPCA-100" can convert small currents into effective voltage with a bandwidth of up to 200MHz.

- 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.

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High-Speed Gain Fixed Current Amplifier (HCA Series)

High-Speed Gain Fixed Current Amplifier (HCA Series)

It maintains a constant bandwidth and gain up to the specified maximum capacitance value without being affected by capacitance, frequency correction, or special connections.

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.

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Low Noise Variable Gain Current Amplifier (DLPCA)

Low Noise Variable Gain Current Amplifier (DLPCA)

The DLPCA-200 is a high-end current amplifier optimized for DC measurements and time-resolved measurements down to microseconds.

- 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.

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Tapered Fiber Amplifier TGModule A

Tapered Fiber Amplifier TGModule A

A gain fiber module with a tapered double-clad fiber doped with ytterbium (Yb) and a pump combiner that is fusion-spliced is currently under patent application.

■Optimal for light amplification of short pulse lasers *Type A is for fiber assembly only *This product is for those who want to manufacture amplifier modules using tapered fibers.

  • Laser Components
  • Other physicochemical equipment

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Tapered Fiber Amplifier TGModule C

Tapered Fiber Amplifier TGModule C

Gain fiber module for optical power amplifier integrated into a water-cooled housing with tapered fiber module.

■ No need for troublesome heat sink design or installation ■ Capable of amplification of up to over 100W, ideal for short pulse laser light amplification * Reasonably priced and user-friendly * We will also introduce a separate LD for pumping

  • Laser Components
  • Other physicochemical equipment

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Semiconductor optical amplifier (gain chip, SOA)

Semiconductor optical amplifier (gain chip, SOA)

QPhotonics supplies a wide range of optical semiconductor devices in the 200 to 1700 nm range.

■Wavelength: Semiconductor amplifier (gain chip, SOA) from 750 to 1560 nm ■Spatial input/output type / Fiber input/output type / Spatial input with fiber output type

  • Laser Components
  • Other optical parts

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High-performance CMOS TIA HLR2S50

High-performance CMOS TIA HLR2S50

◆2.5Gbps GPON TIA 2.5G GPON compatible◆ with internal PD bias filter function◆ can replace major products from various companies

Sensitivity: -31dBm @2.5Gbps with 0.16pF PIN PD (0.9A/W, 10dB ER, BER 1E-10) Transimpedance: 75kΩ 30kHz typical LFC Operating temperature range: -40℃ to +95℃ Low cost Ultra-high sensitivity TIA with automatic gain controller Sensitivity -31dBm / Dynamic range ≧31dB High performance and cost-effectiveness in replacing APD-based receivers in GPON applications Compatible Pad Out with major 2.5Gbps TIA Minimization of crosstalk, low noise, and high sensitivity achieved at low cost through HiLight's patented technology

  • Other measurement, recording and measuring instruments
  • Communications
  • Other optical parts

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2.5G High Performance TIA HLR1M00

2.5G High Performance TIA HLR1M00

◆Ultra-high sensitivity TIA with automatic gain controller◆ Sensitivity -31dBm / Dynamic range ≧31dB

◆High performance and cost-effectiveness achieved by replacing APD-based receivers in GPON applications ◆Also ideal for 155Mbps to 2.5Gbps multi-rate fiber optic receivers Sensitivity: -31dBm Overload +3dBm Transimpedance: 55kΩ Internal PD bias filter function included RSSI monitor output (Sink or Source current mode) Compatible with major 1.25Gbps TIA Pad Out +3.3V single supply voltage Operating temperature range -40℃ to +95℃ Easily replaceable with existing TIAs while delivering high performance Low cost

  • Other optical parts
  • Other measurement, recording and measuring instruments
  • diode

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High Sensitivity CMOS TIA HLR10G1

High Sensitivity CMOS TIA HLR10G1

◆11.3Gbps TIA 10G APD◆Automatic Gain Controller included Ultra High Sensitivity TIA◆Compact die size

◆Compact die size (900um x 711um die) ◆Compatible with a wide range of limiting amplifiers. 3.3V, 24mA supply current ◆50Ω back termination, 3.0kΩ transimpedance, and CML output Sensitivity: -32dBm (with APD @10.312Gbps, BER=10-3) +3.3V supply voltage, 24mA supply current Designed specifically for 10Gbps APD Easily replaceable with major products from various manufacturers Low cost

  • diode
  • Other optical parts
  • Other measurement, recording and measuring instruments

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Low Frequency Voltage Amplifier (DLPVA Series)

Low Frequency Voltage Amplifier (DLPVA Series)

A DC voltage amplifier with low temperature drift of offset input voltage and high accuracy.

- 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.

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Wideband Voltage Amplifier (HVA Series)

Wideband Voltage Amplifier (HVA Series)

Even with different gain settings, the bandwidth remains constant, making it very useful for measuring high-speed signals and pulses.

■ 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.

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Variable Gain High-Speed Gigahertz Amplifier (DUPVA Series)

Variable Gain High-Speed Gigahertz Amplifier (DUPVA Series)

Designed for high-speed and precise measurements requiring a high dynamic range.

■ 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.

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