The Femto 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.
FEATURES
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Si PIN and InGaAs PIN photodiodes
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Wavelength range from 320 to 1700 nm
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Bandwidth from DC to 200 MHz
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Max. conversion gain 1.9 x 10^4 V/W
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Min. NEP 5.2 pW/√Hz
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Free space or fiber optic input
HIGH SENSITIVITY AT HIGH BANDWIDTH
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 and in most cases we offer this service already for single piece quantities. Please contact us for details.
APPLICATIONS
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Spectroscopy
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Fast pulse and transient measurements
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Optical triggering
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Optical front-end for oscilloscopes, A/D converters and RF lock-in amplifiers
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Model |
HCA-S-200M-SI |
HCA-S-200M-IN |
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Photodiode |
0.8 mm Ø Si PIN |
0.3 mm Ø InGaAs PIN |
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Spectral Range |
320 ... 1000 nm |
900 ... 1700 nm |
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Bandwidth (-3 dB) |
DC ... 200 MHz |
DC ... 200 MHz |
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Rise/Fall Time (10% - 90%) |
1.8 ns |
1.8 ns |
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Transimpedance Gain |
2 x 104 V/A |
2 x 104 V/A |
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Max. Conversion Gain |
1.1 x 104 V/W (@ 800 nm) |
1.9 x 104 V/W (@ 1550 nm) |
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Min NEP (@ 10 MHz) |
10 pW/√Hz (@ 800 nm) |
5.2 pW/√Hz (@ 1550 nm) |
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Available Input Options |
Free space (FS), FC or SMA |
Free space (FS) or FC |
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Datasheet |
Output voltage ±1.7 V max (@ 50 Ω load). Offset adjustable by potentiometer. 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.