◆Picosecond pulse: 40ps to 80ps, typ. ◆External analog modulation and digital modulation possible ◆Fiber output compatible (optional)
■Multicolored wavelengths■Capable of driving two wavelengths simultaneously■LAN, RS-232C, and USB connections available (optional) This device consists of a head that incorporates a semiconductor laser diode (LD) and a power supply and controller for driving the head, achieving a rapid and stable semiconductor laser diode light source. It supports APC control (constant optical output mode) using a photodiode built into the LD package, external APC control (using an external photodiode, etc.) when no photodiode is present, and ACC control (constant drive current mode). It comes standard with a temperature control function for the LD using a Peltier element, and it can display the current temperature of the LD. External analog modulation is possible from 10 kHz to 1 GHz. This device is equipped with a GPIB interface as standard. It has a forced OFF (interlock) function for the LD via an external switch. As protection features for the LD, it includes drive current limitation, a shutdown function when optical output exceeds the rated value, slope control to suppress rapid changes to prevent overshoot when changing optical output, and a function to turn off the LD when the temperature is outside the set range during the transient period of temperature control.
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basic information
【Specifications】 ● RF modulation frequency: 10kHz to 1GHz ● Modulation input impedance: 50Ω ● Maximum RF modulation input level: 0dBm (0.632Vp-p sine wave) ● Pulse modulation frequency: up to 200MHz (input pulse width must be 2ns or more) ● Pulse modulation input level: depends on the type of head (set to either TTL, ECL, or PECL at the time of shipment) Maximum input ±10V ● Pulse trigger: positive polarity, Rising Edge ● Optical output range: depends on the type of head ● Pulse width during pulse drive: constant regardless of input pulse width (less than 100ps) ● Operating ambient temperature: +10 to +40℃ ● Storage ambient temperature: -10 to +50℃ ● Operating and storage ambient humidity: 70% or less (no condensation) ● Power supply: AC 100/230V 50/60Hz ● Power consumption: maximum 50VA ● Dimensions: Main unit 210(W)x350(D)x105(H)mm ● Head: 105(W)x103(D)x60.5(H)mm ● Weight: Main unit 3.1kg ● Head: 0.63kg ● Accessories: AC cable (3P, 2m, 1 piece), 2P-3P conversion plug (1 piece), head connection cable (3m, 1 piece per head), interlock terminal terminator (1 piece)
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Applications/Examples of results
■Time-resolved fluorescence spectroscopy measurement ■Biochemical analysis ■Evaluation of time response characteristics of optoelectronic devices ■Optical tomography ■Semiconductor photoluminescence measurement ■Fiber performance evaluation
Detailed information
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★Application Example 1: Fluorescence Lifetime Measurement Fluorescence lifetime measurement is an analytical technique widely used in the fields of fundamental physics and life sciences. As shown in the diagram, a laser pulse is directed at the measurement target, and the fluorescence lifetime is counted at the photon level. The laser pulses used for these measurements require stable light output and very short pulse widths. The OPG-1000PL contributes to improved measurement accuracy by generating stable pulses of less than 80 ps, including temperature compensation.
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★Application Example 2: Fiber Performance Evaluation Pulses shorter than 100 ps have a bandwidth of 3 GHz according to simple calculations, making them suitable for response tests of various high-speed optical detectors, as well as for evaluating the bandwidth of signal transmission lines such as optical fibers. The figure below shows an example of measuring the transmission bandwidth of a 50m long plastic fiber with a diameter of 1mm using the Fourier transform of the impulse response. A 1.5mm diameter SiPIN photodetector was used to receive all modes of the emitted light from the optical fiber. An amplifier with a bandwidth of 20 kHz to 1 GHz and a gain of 30 dB was used to amplify the detector output, which was then observed with a digital oscilloscope in the 500 MHz range. By taking the power ratio of the Fourier transform of the waveform obtained from the 50m fiber and that obtained from 1m, the bandwidth characteristics of the optical fiber can be determined. In this example, the bandwidth was found to be 240 MHz for the 50m fiber.
Company information
■New products related to barcodes ■Laser diode related ■We accept orders for optical fiber connector processing. *We are currently accepting orders for communication to large diameter with short delivery times! ■Manufacturing of ultra-stabilized LD modules and light source devices ■Import and sales of various semiconductor lasers ■Import and sales of optical modulators and optical peripheral components ■Other import and sales of scientific and analytical instruments and parts
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