400 MHz Photoreceiver 
Series HCA-S-400M

 
  • Si and InGaAs Photodiodes
  • Wavelength Range from
    320 to 1700 nm
  • Bandwidth DC to 400 MHz
  • Rise Time 1 ns
  • Max. Conversion Gain
    5.0 x 103 V/W


Post holder and post not included

High Sensitivity at High Bandwidth

The series HCA-S-400M Photoreceivers combine fast photodiodes with the proven and outstanding FEMTO HCA current amplifier technology. The HCA-S-400M is available with either a fast Silicon or InGaAs photodiode covering a spectral range from 320 to 1000 nm and 900 to 1700 nm, respectively. The amplifier transimpedance is 5 x 103 V/A resulting in a maximum conversion gain of 5 x 103 V/W at 1550 nm for the InGaAs model, and 2.7 x 103 V/W at 800 nm for the model with Silicon photodiode. The sophisticated DC coupled multistage amplifier design allows measurements from DC to a maximum bandwidth of 400 MHz corresponding to a minimum rise time of 1 ns. Due to the low noise design signals with an optical power in the micro Watt range can be detected without the need for further averaging. Different models with free space or fiber-optic input are available.
Best Possible Solution With Customized Photoreceivers

Every application is different with its individual requirements for bandwidth, gain and responsivity. Therefore FEMTO offers in addition to the standard product portfolio customized photoreceivers with optimized specifications for a great variety of applications. Following a detailed analysis of the required specifications we offer individual solutions at very attractive prices. And 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
  • Test of Digital Fiber-Optic Systems
  • Optical Front-End for Oscilloscopes and A/D Converters
Model HCA-S-400M-SI HCA-S-400M-IN-FC
Photodiode 0.8 mm Ø Si PIN 0.1 mm Ø InGaAs PIN
Spectral Range 320 ... 1000 nm 900 ... 1700 nm
Bandwidth (-3 dB) DC ... 400 MHz DC ... 400 MHz
Rise/Fall Time
(10% - 90%)		 1 ns 1 ns
Transimpedance Gain 5 x 103 V/A 5 x 103 V/A
Max. Conversion Gain 2.7 x 103 V/W
(@ 800 nm)		 5 x 103 V/W
(@ 1550 nm)
Min NEP (@ 100 MHz) 40 pW/√Hz
(@ 800 nm) 		21 pW/√Hz
(@ 1550 nm)
Available Input Options Free Space (FS), FC or SMA FC
View and Download
Datasheet		 198 kB 174 kB

Output voltage ± 1.5 V max. (@ 50 Ω load). Offset adjustable by trimpot. Output short-circuit protected. Power supply via 3-pin LEMO socket. A mating connector is provided with the device. Optional power supply PS-15 available. The photoreceivers with free space input come with threaded M4 and 8-32 mounting holes for integration in optical bench systems. For further information please view the datasheet or contact FEMTO.

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