Voxtel has released an avalanche photodiode (APD) receiver with 1GHz bandwidth and a 200um-diameter optical area.
The company believes it to be the highest-bandwidth large-area NIR APD receiver, which makes it suitable for a range of laser rangefinders and laser designators, and for applications in free-space optical communications, optical instrumentation and LADAR/LIDAR.
The model RIP1-NJAC APD photoreceiver is the latest entry in Voxtel's Siletz line of single-carrier multiplication avalanche photodiode (SCM-APD) products.
The receiver integrates the low-excess-noise SCM-APD with a low-noise transimpedance amplifier (TIA).
Voxtel's Siletz SCM-APDs are said to be the lowest-excess-noise NIR-SWIR APDs available (with an equivalent ionisation coefficient keff less than 0.02) and allow for the receiver to operate at high avalanche gain, boosting the optical signal over the amplifier noise level without the degrading effects of avalanche-induced excess noise.
The ultra-low excess noise and high gain make the RIP1-NJAC the most sensitive photoreceiver available on the market, offering a maximum responsivity over 50 A/W at 1,550nm, with operating gain up to 50.
A single-stage thermoelectric (TE) cooler is included to eliminate temperature-induced gain variation and allow optimal performance over the range of application environments.
The receiver is available with an optional fibre pigtail.
