Post holder and post not included
By combining state of the art photodiodes with the proven and outstanding FEMTO GHz amplifier technology we designed a new family of photoreceivers with a remarkable performance. The HSPR-X and HSA-X-S offer an upper bandwidth limit of 2 GHz. Two models with either a fast Si-PIN or InGaAs-PIN photodiode cover a spectral range from 320 to 1000 nm and 900 to 1700 nm, respectively. Due to the sophisticated amplifier design the minimum NEP is just 11 pW/√Hz at a transimpedance of 5 x 103 V/A. This allows for the measurement of optical power levels in the µW range with GHz speed.
The free space input is designed as a 1.035"-40 threaded flange with a screw-on coupler ring (FST) or as a 25 mm round flange without thread (FS). Both types open up broad compatibility with optical accessories from various manufacturers, such as lenses, tubes, cage systems, optical adapters etc.
The FST free-space input can be converted into fiber connections (FC, FSMA) easily by simply screwing on the fiber adapter of the PRA series.
The relatively large-area detector facilitates optical focusing in free-space applications and ensures a high and stable degree of coupling when using the optionally available fiber optic adapter. For models with detector areas smaller than Ø 0.4 mm, the use of fiber adapters is only recommended to a limited extent, since coupling losses and instabilities can occur. If the focus is on high-precision fiber optic measurements, using FC-models with fixed optical fiber input will usually give the best results.
FST |
FS
|
FC
|
Pic. 1: FST input flange with 1.035"-40 external thread and coupler ring with internal thread | Pic. 2: FS input with 25 mm round flange | Pic. 3: FC input with permanent/fixed PC/APC coupling |
All HSA-X-S and HSPR-X photo receivers are equipped with UNC 8-32 and M4 threaded holes and can therefore be conveniently and stably integrated into optical systems on standard rod holders.
Models |
HSA-X-S-1G4-SI-FST HSA-X-S-1G4-SI-FS HSA-X-S-1G4-SI-FC |
HSPR-X-I-1G4-SI-FST HSPR-X-I-1G4-SI-FS HSPR-X-I-1G4-SI-FC |
HSA-X-S-2G-IN-FST HSA-X-S-2G-IN-FS HSA-X-S-2G-IN-FC |
HSPR-X-I-2G-IN-FST HSPR-X-I-2G-IN-FS HSPR-X-I-2G-IN-FC |
Output | non-inverting | inverting | non-inverting | inverting |
Photodiode | Ø 0.4 mm Si-PIN | Ø 0.4 mm Si-PIN | Ø 0.1 mm InGaAs-PIN | Ø 0.1 mm InGaAs-PIN |
Spectral Range | 320 – 1000 nm | 320 – 1000 nm | 900 – 1700 nm | 900 – 1700 nm |
Bandwidth (−3 dB) | 10 kHz – 1.4 GHz | 10 kHz – 1.4 GHz | 10 kHz – 2 GHz | 10 kHz – 2 GHz |
Rise/Fall Time (10 % - 90 %) |
250 ps | 250 ps | 180 ps | 180 ps |
Transimpedance Gain | 5 x 103 V/A |
5 x 103 V/A inverting |
5 x 103 V/A |
5 x 103 V/A inverting |
Conversion Gain |
2.55 x 103 V/W (@ 760 nm) |
2.55 x 103 V/W (@ 760 nm) |
4.75 x 103 V/W (@ 1550 nm) |
4.75 x 103 V/W (@ 1550 nm) |
NEP (@ 100 MHz) |
32 pW/√Hz (@ 760 nm) |
19 pW/√Hz (@ 760 nm) |
16 pW/√Hz (@ 1550 nm) |
11 pW/√Hz (@ 1550 nm) |
Output VSWR | 2.5 : 1 | 1.4 : 1 | 2.5 : 1 | 1.4 : 1 |
Maximum Output Voltage @ 50 Ω | 1.9 VPP | 2.0 VPP | 1.9 VPP | 2.0 VPP |
Output Noise | 3.6 mVRMS | 2.5 mVRMS | 3.6 mVRMS | 2.5 mVRMS |
Datasheet | 869 kB | 872 kB | 693 kB | 693 kB |
Output short-circuit protected. 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.
With the extremely low-noise quartz tuning fork charge amplifier HQA-15M-10T, FEMTO has added an application-specific amplifier to its product range.
With the completely newly developed HBPR photoreceiver / photodetector platform, FEMTO has raised the bar in the field of balanced photoreceivers to a new level.
FEMTO® Messtechnik GmbH
Klosterstraße 64
10179 Berlin
Germany
Phone: +49-(0)30-280 4711-0
Fax: +49-(0)30-280 4711-11
Email: info@femto.de
© FEMTO 2023