Post holder and post not included

High Sensitivity at High Bandwidth

The series HCA-S-200M photoreceivers combine fast photodiodes with the proven and outstanding FEMTO HCA current amplifier technology. The HCA-S-200M is available with either a Silicon or InGaAs photodiode covering a spectral range from 320 to 1000 nm and 900 to 1700 nm, respectively. The electrical amplifier gain is 2 x 104 V/A resulting in a maximum conversion gain of 1.9 x 104 V/W at 1550 nm for the InGaAs model. The sophisticated DC coupled multistage amplifier design allows measurements from DC to a maximum bandwidth of 200 MHz corresponding to a minimum rise time of 1.8 ns. With a noise equivalent power (NEP) as low as 5 pW/√Hz signals with an optical power in the micro Watt range can be detected without the need for further averaging.

Best Possible Solution With Customized Photoreceivers

Every application is different with its individual requirements for bandwidth, gain and responsivity. Therefore FEMTO offers customized photoreceivers with optimized specifications for a great variety of applications in addition to the standard product portfolio. Following a detailed analysis of the required specification we offer individual solutions at very attractive prices aAnd in most cases we offer this service already for single piece quantities. Please contact us for details.

Applications

Spectroscopy Fast Pulse and Transient Measurements Optical Triggering Optical Front-End for Oscilloscopes, A/D Converters and RF Lock-In Amplifiers

Model	HCA-S-200M-SI	HCA-S-200M-IN
Photodiode	0.8 mm Ø Si PIN	0.3 mm Ø InGaAs PIN
Spectral Range	320 ... 1000 nm	900 ... 1700 nm
Bandwidth (-3 dB)	DC ... 200 MHz	DC ... 200 MHz
Rise/Fall Time (10% - 90%)	1.8 ns	1.8 ns
Transimpedance Gain	2 x 104 V/A	2 x 104 V/A
Max. Conversion Gain	1.1 x 104 V/W (@ 800 nm)	1.9 x 104 V/W (@ 1550 nm)
Min NEP (@ 10 MHz)	10 pW/√Hz (@ 800 nm)	5 pW/√Hz (@ 1550 nm)
Available Input Options	Free Space (FS), FC or SMA	Free Space (FS) or FC
View and Download Datasheet	327 kB	300 kB
Output voltage ± 1.7 V max (@ 50 Ω load). Offset adjustable by trimpot. AC coupled units are optionally available. Output short-circuit protected. The photoreceivers with free space input come with threaded M4 and 8-32 mounting holes for use with standard mounting posts. Power supply ± 15 V via 3-pin LEMO socket. A mating connector is provided with the device. Optional power supply PS-15 available. For further information please view the datasheet or contact FEMTO.