Compare Model Drawings, CAD & Specs Availability Price
Optical Receiver, 320-1000 nm Silicon Detector, 125 MHz Bandwidth
$1,432
In Stock
In Stock
Optical Receiver, 320-1000 nm Silicon Detector, 25 kHz - 125 MHz Bandwidth
$1,532
In Stock
In Stock
Optical Receiver, 900-1700 nm InGaAs Detector, 125 MHz Bandwidth
$1,432
In Stock
In Stock
Optical Receiver, 900-1700 nm InGaAs Detector, 25 kHz - 125 MHz Bandwidth
$1,532
In Stock
In Stock

Specifications

Features

Silicon or InGaAs Versions

Silicon models provide visible wavelength coverage from 320-1000 nm and use a silicon-PIN photodiode with a high-gain, low-noise transimpedance amplifier. The near-IR version uses an InGaAs-PIN photodetector that provides coverage from 900-1700 nm.

Typical responsivity of Model 1801 (Silicon) and Model 1811 (InGaAs) detectors.

High Transimpedance Gain and Low Noise

Because of their high transimpedance gain and low noise-equivalent power (NEP), they offer the best in sensitivity for signals with rise and fall times as short as 3 ns. This high sensitivity, combined with their high-level output, reduces the effects of downstream noise sources.

Typical noise floor for Models 1801 (blue) and 1811 (black).

DC Coupled Versions

With true DC coupling, these photoreceivers give linear responses to transient signals without artificial ringing, tails, or other anomalies.

AC Coupled Versions

AC-coupled versions with a low-frequency roll-off at 25 kHz are available. These photoreceivers are useful for measuring a small AC signal on a large cw component. To make alignment easier, AC-coupled versions are equipped with a DC photocurrent monitor output. The monitor output has a 50-kHz bandwidth and a gain of 1 V/mA.

RF Shielding

Careful RF shielding and filtering of power-supply inputs eliminate electromagnetic interference, even in laboratories with Q-switched lasers and other noisy equipment.