The 1811-FS-AC InGaAs Optical Receiver is a free space, 900 to 1700 nm AC coupled photoreceiver offering a well-balanced combination of gain, bandwidth, and low noise over the 25 kHz to 125 MHz frequency range. Because of its high transimpedance gain and low noise-equivalent power (NEP), it offers the best in sensitivity for signals with rise and fall times as short as 3 ns. This high sensitivity, combined with its high-level output, reduces the effects of downstream noise sources. For mounting it has a 8-32 mounting thread, and we include an M4 metric adaptor and tool. An external ±15 VDC power supply, which must be purchased separately, is required. Power supply cables
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.
AC-coupled versions with a low-frequency roll-off at 25 kHz are available. These photoreceivers are useful for measuring AC signal with a higher resolution, even when you have a large DC component, than the DC version. To make alignment easier, AC-coupled versions are equipped with an additional DC photocurrent monitor output. The monitor output has a 50-kHz bandwidth and a gain of 1 V/mA.
Careful RF shielding and filtering of power-supply inputs eliminate electromagnetic interference, even in laboratories with Q-switched lasers and other noisy equipment.
Ultra-High Velocity Learn More
