• Abberior Instruments and Super Resolution Microscopy at Lastek
    Abberior Instruments and Super Resolution Microscopy at Lastek

    Abberior Instruments has partnered with Lastek in Australia and New Zealand to offer the most complete experience for super resolution microscopy. Read more here.

  • Raptor Photonics OWL 640 SWIR camera
    Raptor Photonics OWL 640 SWIR camera

    Raptor Photonics OWL 640 is the best performing SWIR camera in the world. Demonstration system now available. Please enquire for details. Read more.

  • Toptica: DL pro with Digital Laser Controller DLC pro
    Toptica: DL pro with Digital Laser Controller DLC pro

    The new digital laser controller for TOPTICA’s tunable diode laser DL pro sets new benchmarks with regards to low noise and low drift levels.

    Demonstration system now available. Please enquire for details. Read more...

  • High Finesse Laser Spectrum Analyzer Spectrometer for Broadband Sources
    High Finesse Laser Spectrum Analyzer Spectrometer for Broadband Sources

    The High Finesse LSA Laser Spectrum Analyser analyses multi-line or broadband spectra of cw and pulsed lasers, gas discharge lamps, and more.  Lastek currently have a demonstration system available for evaluation. Read more...

  • Alio Industries: True Nano™ Precision Motion Systems
    Alio Industries: True Nano™ Precision Motion Systems

    ALIO Designs and Manufacturers Proprietary Robotic Devices and Tools that Enable Precise Nano-Scale Movements for Manufacturing and Research & Development

    Read more...

Femto announce new Picowatt Photoreceiver

PWPR 2K SI FS NEW W R0

The new Femto picowatt photoreceiver series PWPR-2K with switchable gain (109 V/A, 1010 V/A) and a bandwidth from DC to 2 kHz is the perfect choice for cw-measurements, time resolved signal acquisitions and highly sensitive modulated measurements.

FEATURES

  • Ultra-low noise, NEP ≤ 10 fW/√Hz
  • Si and InGaAs models cover the wavelength range from 320 to 1700 nm
  • Bandwidth DC to 2 kHz
  • Transimpedance gain switchable 109 V/A, 1010 V/A
  • Free-space input 1.035″-40 threaded, alternatively 25 mm diameter unthreaded
  • Easily convertible to fiber optic input (FC and FSMA) with optionally available screw-on adapters

MEASURING SMALLEST OPTICAL SIGNALS FROM DC TO 2 KHZ

In addition to precise and fast cw-measurements the relatively large bandwidth from DC to 2 kHz also allows time-resolved and modulated measurements. Particularly the combination with lock-in amplifiers results in ultra-sensitive measurement systems being almost immune to disturbances from external sources. In this way the PWPR-2K can easily detect optical powers from about 100 fW up to 10 nW.

COMPATIBILITY WITH OPTICAL BENCH (FREE SPACE) AND FIBER OPTICS

The PWPR-2K photoreceivers are factory equipped with an optical free-space input. There is the choice between a 1.035″-40 threaded flange (FST) and a 25 mm unthreaded flange (FS). Both types offer a broad compatibility with optical standard accessories like tubes, lenses, cage systems and optical adapters from various manufacturers. The threaded free-space input (FST) e.g. can be easily converted to an optical fiber input by screwing the optionally available fiber adapters (PRA-FC and PRA-FSMA) on it.

The relatively large area detectors make optical alignment easy in free-space applications and ensure a very high and stable coupling efficiency when using the optionally available fiber optic adapters PRA-FC and PRA-FSMA.

All PWPR-2K photoreceivers feature both UNC 8-32 and M4 tapped holes for mounting on metric and imperial threaded standard posts.

APPLICATIONS

  • Spectroscopy, reflection and transmission measurements
  • Time resolved optical pulse and power measurements
  • Characterization of light sources
  • Highly sensitive applications using chopper modulation
  • Optical front-end for oscilloscopes, A/D converters and lock-in amplifiers
Model PWPR-2K-SI PWPR-2K-IN
Photodiode 1.2 mm Ø Si-PIN 0.5 mm Ø InGaAs-PIN
Spectral Range 320 - 1060 nm 900 - 1700 nm
Bandwidth (−3 dB) DC - 2 kHz DC - 2 kHz
Rise/Fall Time (10 % - 90 %) 165 µs 165 µs
Transimpedance Gain (switchable)
1 x 109 V/A
1 x 1010 V/A
1 x 109 V/A
1 x 1010 V/A
Max. Conversion Gain

0.64 x 109 V/W
(@ 900 nm, gain 109 V/A)

0.64 x 1010 V/W
(@ 900 nm, gain 1010 V/A)

1.1 x 109 V/W
(@ 1580 nm, gain 109 V/A)

1.1 x 1010 V/W 
(@ 1580 nm, gain 1010 V/A)
NEP (@ 100 Hz) 9 fW/√Hz 
(@ 900 nm)
10 fW/√Hz 
(@ 1580 nm)
Datasheet 628 kB 649 kB

Output voltage range up to +10 V. Offset adjustable by potentiometer. Output short-circuit protected. 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.

You are here: Home Femto announce new Picowatt Photoreceiver