The 200 kHz photoreceivers are the ideal optical front ends for systems requiring low-noise input with modest bandwidth. They have been engineered to eliminate most common sources of noise and drift. Battery powered, they connect to other instruments with a single coaxial cable, thus eliminating the possibility of ground loops. They have enough gain to pick up even very weak signals.



Features

Adjustable High and Low Pass Filters

2002-2001_2011responsivity

Independent control of the low- and high-frequency corners allows you to reject unwanted noise effectively. The single-pole filters provide a slope of –6 dB/octave with less than 90° phase shift. The DC/30 setting prevents your signal from going off-scale due to DC amplitude fluctuations, without attenuating fast signals. The high-pass filter can be adjusted to eliminate residual 60-Hz noise, and the independent low-pass filter can be set to dampen noisy signals.

Variable-gain Transimpedance Amplifier

Variable gain of up to 90 dB in 10-dB steps gives you a useful input range from 1 pW to 10 mW. For small signals requiring 80-dB or greater gain, the maximum bandwidth is reduced from 200 kHz to 20 kHz.

Free-space or Fiber-coupled Versions

For application requiring either free-space (FS) or FC fiber-coupling (FC) detection, we have you covered

Flexibility & High Performance for a Wide Range of Applications

Use them as low-noise, DC-coupled photoreceivers/preamplifiers in servo-control systems requiring near-zero phase shifts at up to 100 kHz. Or use them in lock-in amplifier systems to take advantage of their shot-noise-limited performance and 90-dB maximum gain. By correlating their output voltages to a calibrated power meter, these photoreceivers can also be used as sensitive power sensors.

Fiber Alignment Application

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A Model 2001-FC photoreceiver is being used in conjunction with our Model 9131 fiber aligner to optimize the coupling efficiency of the incoming laser light into an optical fiber.

Tiny Jack for Height Adjustment

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Our Model 9201 Tiny jack is especially useful for aligning the height of this photoreciever.

Specifications



2001-FC 2001-FS 2011-FC 2011-FS
Wavelength Range (nm) 300-1050 300-1050 900-1700 900-1700
Bandwidth (-3 dB) 200 kHz 200 kHz 200 kHz 200 kHz
Rise Time (s) 2 µ 2 µ 2 µ 2 µ
Conversion Gain, Maximum (V/W) 9.4x106 9.4x106 18.8x106 18.8x106
Responsivity (Peak) () 0.5 A/W 0.5 A/W 1.0 A/W 1.0 A/W
Maximum Transimpedance Gain 18.8x106 V/A 18.8x106 V/A 18.8x106 V/A 18.8x106 V/A
Output Impedance (Ω) 16 16 16 16
NEP (pW/√Hz) 0.25 0.25 0.19 0.19
Saturation Power CW 10 mW @ 850 nm 10 mW @ 850 nm 10 mW @ 1600 nm 10 mW @ 1600 nm
Optical Input FC Free Space FC Free Space
Detector Diameter (mm) 0.9 0.9 0.3 0.3
Detector Material Silicon Silicon InGaAs InGaAs
Output Connector SMA SMA SMA SMA
Power Requirements two internal 9-V batteries two internal 9-V batteries Two internal 9V batteries two internal 9-V batteries


Dimensions

99-2001RC