PbSe Room Temperature 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