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Voltage controlled variable optical attenuator. This is a used unit mfg. by Xerox for use with a linear polarized Helium Neon laser. The unit uses a electro-optic element and a stationary optic to variably attenuate the laser output power. A simple 0 to 3 VDC low current (less than 1mA) input is all that is needed to operate. The laser output can be fully attenuated at 0 volts or 3 volts depending on the light input plane of polarization and can produce an attenuation ratio of around 50:1. The assembly also has a beam splitter and a photodiode that taps a small amount of the attenuated light for use in a feedback loop circuit. The front optic is a cylindrical lens that can be removed if desired. -
A optical transducer that converts light into an electrical current. Specifications: Manufacture: Silicon Detector corp. Model number: SD4552 Spectral Response: 400 to 1100 nm. Active Area: .25" x >15" Dimensions: .358" diameter x .13" tall. -
Out of stock
Like new, Silicon Photodiode made by Advanced Photonix Inc. Part number: SD 444-12-12-171Click HERE for the spec sheet.
A reverse bias voltage (1.5 to 10 VDC) and a shunt rsisitor will greatly improve the frequency response of this photodiode. Active area is 11.3mm dia., spectral response is 350 to 1100nm.
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New thermoelectric Peltier module made by Laird Technologies model CP10,63,08,L1. Ideal for cooling laser diodes, crystals, detectors, and more. Specifications: Voltage: 8 VDC max. Current: 3 Amps max. Heat Pump: 12 Watt max. (cold side) Input leads: 16 AWG, 150 mm long. Dimensions: 30 x 15 x 4 mm See this LINK for spec sheet. -
New thermoelectric Peltier module made by Laird Technologies model SH10,23,06,L. Ideal for cooling laser diodes, crystals, detectors, and more. Specifications: Voltage: 2.6 VDC max. Current: 3 Amps max. Heat Pump: 5 Watt max. (cold side) Input leads: 16 AWG, 115 mm long. Dimensions: 15 x 15 x 3.6 mm, 7 mm diameter hole in center. See this LINK for the complete specification sheet.
