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LEPTON Series Single-pixel VPD PbSe MWIR Detectors

Product information "LEPTON Series Single-pixel VPD PbSe MWIR Detectors"

Wavelength Range 1.0-5.0 µm MWIR; Detector Size 1x1, 2x2 mm; Time Constant <2 µs; Responsivity 9x103, 4.5x103 V/W; Element Resistance 0.1-2.0 MΩ

New Infrared Technologies’ (NIT) LEPTON Series of single-pixel VPD PbSe MWIR detectors are available uncooled as well as with integrated TECs (thermoelectric cooling elements), with different geometries, packaging solutions and preamplifier boards. LEPTON Series single-pixel detectors come in two standard sizes: 1 mm × 1 mm or 2 mm × 2 mm.

LEPTON Series uncooled single-pixel PbSe MWIR detectors can be ordered packaged in SMD or TO-5 housings (with cap, hermetic) with sapphire window. These detectors are operational at room temperature and don’t require any cooling devices.

LEPTON Series cooled single-pixel PbSe MWIR detectors are hermetically packaged in a TO-8 can housing with cap and sapphire window and include one or two thermoelectric cooler (TEC) stages for higher sensitivity as well as a thermistor. A calibration curve for the thermistor is available.

NIT’s LEPTON Series also includes two low-noise preamplifier boards that are 5-V-powered via mini-USB connector: The LEPTON ANALOG PREAMP provides rotary switches to manually select the detector biasing voltage (4 steps from 1.25 V to 10 V) as well as the transimpedance gain (4 steps from 104 to 107 V/A). This preamp outputs a ±10 V analog voltage on a BNC connector. The LEPTON PREAMP WITH USB OUTPUT allows to digitally select the values for detector biasing voltage and transimpedance gain via software. Here, the output is a digital 14 Bit signal with a maximum sampling rate of 20 ksps. This preamp also features an analog output for the preamplifier stage on SMB or BNC connector.

For more pixels, linear and two-dimensional array MWIR cameras are available from New Infrared Technologies – please refer to the LUXELL series of linear array MWIR cameras and TACHYON series of high-speed imaging MWIR cameras respectively.

Key Features:

  • Detector Sensing Material: VPD Polycrystalline PbSe
  • Uncooled and TEC-cooled (1-stage, 2-stages) Versions Available
  • Square Pixels, Available Pixel Geometries: 1 x 1 mm, 2 x 2 mm
  • Packaging: SMD (10x10 mm) Non-hermetic, TO-5 (9.14 mm Dia.) Hermetic With Cap, TO-8 (15.24 mm Dia.) Hermetic With Cap
  • Sapphire Window
  • IR Detection Band: MWIR, 1.0 µm to 5.0 µm
  • Peak Wavelength of Detection: 3.7 µm
  • D* (λpeak) Uncooled: 2x109 Jones Typical
  • D* (λpeak, 1,000 Hz, 1.2 Hz) Cooled: 1x1010 Jones
  • Time Constant: <2 µs
  • Biasing Voltage: 5 V, 10 V Typical
  • Element Resistance: 0.1 to 2.0 MΩ
  • Responsivity (@Vb = 10 V): 9x103 V/W (1x1 mm), 4.5x103 V/W (2x2 mm)
  • Power: 1 mW
  • Read-out Electronics External (Not Included)
  • Customizable
  • Operating Temperature: +5 °C to +70 °C (SMD), -40 °C to +85 °C (TO-5, TO8)
  • Amplifier Board Transimpedance Gain: 104 to 107 V/A, Adjustable Manually or per Software
  • Amplifier Board Dark Current Cancellation: 1.24 µA to 1 mA, Adjustable Manually or per Software
  • Amplifier Board Power Supply: 5 VDC, 60 mA (mini-USB Connector)
  • Amplifier Board Output: Analog (±10 V), Digital (14 Bit)
  • Amplifier Board Noise: 5 pA @1 kHz, 107 V/A
  • Amplifier Board Dimensions: 75.90 x 35.10 x 28.70 mm (Analog), 89.30 x 35.10 x 26.30 mm (USB Output)

Applications: Gas & Flame Detection; Laser Detection

Manufacturer "New Infrared Technologies (NIT)"
Founded in 1973 and located in Norton, MA, New England Photoconductor Corp. (N.E.P.) manufactures PbS, PbSe and InGaAs IR detectors, both for room temperature and thermoelectrically cooled, as well as thermoelectric cooler controllers, pre-amplifiers and detector accessories. N.E.P. products are targeted at industries including imaging, spectroscopy, environmental testing, process control, fire detection, gas analysis, aerospace, defence, law enforcement and medical monitoring.
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