PbSe photoconductive detectors P9696 series P3207-07 Infrared detectors with fast response and high sensitivity in 5 m wavelength band Compared to other detectors used in the same wavelength regions, PbSe photoconductive detectors have faster response and can operate at room temperature, making them widely used in gas analyzers, etc. Cooling these detectors increases the sensitivity and improves the S/N. So cooled type PbSe photoconductive detectors are widely used in high-precision photometry such as for analytical instruments. Features Applications High-speed response Gas analyzer (CH4, CO, CO2) Room temperature type and TE-cooled type available Radiation thermometer Lower temperature detection limit: approx. 50 °C Flame detector With bandpass lter: P3207-07 Film thickness gauge Accessories (options) Heatsink for one-stage TE-cooled type A3179 Heatsink for two-stage TE-cooled type A3179-01 Temperature controller for TE-cooled type C1103-04 Amplier for PbS/PbSe photoconductive detector C3757-02 Infrared detector module with preamp Non-cooled type P4245 Cooled type P4639 Specications/Absolute maximum ratings Type No. Dimensional outline Package P9696-02 P9696-03 TO-5 P3207-07 TO-5 (with filter) P9696-102 P9696-103 P9696-202 P9696-203 TO-8 Cooling Non-cooled Active area (mm) 2×2 3×3 Absolute maximum ratings Thermistor TE-cooler Operating Supply *1 Storage power voltage current temperature temperature dissipation consumption Vs Topr Tstg (mW) (A) (V) (°C) (°C) - - 2×2 One-stage TE-cooled Two-stage TE-cooled 2 3 2 3 × × × × 2 3 2 3 100 -30 to +50 -55 to +60 1.5 0.2 1.0 *1: Voltage applied to a PbSe detector through a load resistor www.hamamatsu.com 1 PbSe photoconductive detectors P9696 series, P3207-07 Electrical and optical characteristics (Typ. unless otherwise noted) Type No. Measurement Peak condition Cut-off sensitivity wavelength Element wavelength Oc temperature Op T (°C) P9696-02 P9696-03 P3207-07 *2 P9696-102 P9696-103 P9696-202 P9696-203 (m) Min. (V/W) 1.5 × 103 6.7 × 102 1.4 × 103 5.6 × 103 2.5 × 103 6.7 × 103 3.0 × 103 (m) 4.0 25 4.8 4.3 -10 4.1 5.1 -20 4.2 5.2 Photo sensitivity S *3 O=Op Vs=15 V D* (500, 600, 1) D* (Op, 600, 1) Typ. Min. Typ. (V/W) (cm · Hz1/2/W) (cm · Hz1/2/W) (cm · Hz1/2/W) 3.0 × 103 1 × 108 2.5 × 108 2.5 × 109 1.3 × 103 1.8 × 103 2 × 109 3 7.5 × 10 2.5 × 108 5 × 108 5 × 109 3.3 × 103 1 × 104 5 × 108 1 × 109 1 × 1010 4.7 × 103 Rise time tr 0 to 63 % Dark resistance Rd Max. (s) (M:) 10 0.1 to 3 20 0.5 to 10 *2: Half width 400 nm *3: Chopping frequency=600 Hz, load resistance=nearly equal to detector dark resistance Spectral response P9696 series P3207-07 (Typ.) -20 °C 1010 -10 °C 25 °C 9 (Typ. T=25 °C) 1010 D* (λ, 600, 1) (cm · Hz1/2/W) D* (λp, 600, 1) (cm · Hz1/2/W) 1011 10 108 109 108 7 10 1 2 3 4 5 6 7 Wavelength (μm) 1 2 3 4 5 6 7 Wavelength (μm) KIRDB0342EB KIRDB0391EB 2 PbSe photoconductive detectors S/N vs. supply voltage (P9696-02) (Typ. Ta=25 °C) Light source: black body 500 K Incident energy: 16.7 μW/cm2 Chopping frequency: 600 Hz Frequency bandwidth: 60 Hz Supply voltage is the value which contains load resistance. Signal (μV) 1200 1000 800 10 600 N (Noise) 400 Light source: black body 500 K 2 Incident energy: 16.7 μW/cm Supply voltage: 15 V S/N 103 15 S (Signal) (Ta=25 °C) 104 20 S/N (relative value) 1400 S/N vs. chopping frequency Noise (μV) 1600 P9696 series, P3207-07 S (Signal) 2 10 N (Noise) 101 5 200 0 20 0 40 80 60 100 100 101 0 120 102 Supply voltage (V) 103 Chopping frequency (Hz) KIRDB0440EA KIRDB0441EA Increasing the chopping frequency reduces the 1/f noise and results in an S/N improvement. The S/N can also be improved by narrowing the noise bandwidth using a lock-in amplier. Photo sensitivity vs. element temperature Dark resistance, rise time vs. element temperature (Typ. Ta=25 °C) 3 10 (Typ. Ta=25 °C) 103 Dark resistance Relative value Relative sensitivity Light source: black body 500 K Supply voltage: 15 V Incident energy: 16.7 μW/cm2 Chopping frequency: 600 Hz 102 1 10 -20 -10 0 10 20 30 40 50 Element temperature (°C) 102 10 Rise time 1 -20 -10 0 10 20 30 40 50 Element temperature (°C) KIRDB0442EA KIRDB0443EA Cooling the device enhances its sensitivity, but the sensitivity also depends on the load resistance in the circuit. 3 PbSe photoconductive detectors Cooling characteristics of TE-cooler Linearity (Typ. Ta=25 °C, fully illuminated) 102 (Typ. Ta=25 °C, Thermal resistance of heatsink=3 °C/W) 40 Element temperature (°C) 101 Relative sensitivity P9696 series, P3207-07 100 10-1 10-2 20 One-stage TE-cooled type 0 -20 Two-stage TE-cooled type -40 Dependent on NEP 10-3 10-7 -60 10-6 10-5 10-4 10-3 10-2 0 0.2 0.4 Incident energy (W/cm2) 0.6 0.8 1.0 1.2 1.4 1.6 Current (A) KIRDB0056EA KIRDB0185EA By making the incident light spot smaller than the active area, the upper limit of the linearity becomes lower. Thermistor temperature characteristic Current vs. voltage characteristics of TE-cooler 1.6 (Typ. Ta=25 °C, thermal resistance of heatsink=3 °C/W) (Typ.) 106 1.4 One-stage TE-cooled type Resistance (Ω) Current (A) 1.2 1.0 0.8 Two-stage TE-cooled type 0.6 105 104 0.4 0.2 103 -40 0 0 0.2 0.4 0.6 0.8 1.0 1.2 -30 Voltage (V) -20 -10 0 10 20 30 Element temperature (°C) KIRDB0115EB KIRDB0116EA Connection example (P9696-203) Cable (supplied with C3757-02) 2-conductor shielded cable C4696 Chopper P9696-203 + A3179-01 Detector and heatsink BNC connector cable (sold separately) C3757-02 C1103-04 Power supply for amp Amp Lock-in amp or spectrum analyzer Signal processing circuit Temperature controller Cable (supplied with C1103-04) Connect the C1103-04 and power supply ground terminals together. KIRDC0093EA 4 PbSe photoconductive detectors P9696 series, P3207-07 Dimensional outlines (unit: mm) P9696-02/-03 P3207-07 9.1 ± 0.3 9.1 ± 0.3 8.1 ± 0.1 Window 5.5 ± 0.1 Window 5.5 ± 0.1 3.0 ± 0.2 4.2 ± 0.2 2.1 ± 0.2 0.45 Lead 18 Min. 0.4 Max. 2.1 ± 0.2 4.2 ± 0.2 Photosensitive surface 5.1 ± 0.2 0. 8 ± 0. 2 0.45 Lead Filter 18 Min. 0.4 Max. Photosensitive surface 8.1 ± 0.1 8 0. ± 2 0. 45° Detector Detector GND Chip position accuracy with respect to the cap center 0.2 mm Max. 1.5 Max. 5.1 ± 0.2 Detector Detector GND Chip position accuracy with respect to the cap center 0.2 mm Max. 1.5 Max. KIRDA0118EB KIRDA0183EB P9696-102/-103 P9696-202/-203 15.3 ± 0.2 15.3 ± 0.2 14 ± 0.2 Photosensitive surface 0.45 Lead 10 ± 0.2 10.2 ± 0.2 10.2 ± 0.2 5.1 ± 0.2 Detector Detector TE-cooler (-) TE-cooler (+) Thermistor Chip position accuracy with respect to the cap center 0.3 mm Max. KIRDA0128EB 5.1 ± 0.2 5.1 ± 0.2 0.45 Lead 6.7 ± 0.2 4.3 ± 0.2 Photosensitive surface Window 10 ± 0.2 12 Min. Window 10 ± 0.2 12 Min. 6.4 ± 0.2 14 ± 0.2 5.1 ± 0.2 Detector Detector TE-cooler (-) TE-cooler (+) Thermistor Chip position accuracy with respect to the cap center 0.3 mm Max. KIRDA0125EB Information furnished by HAMAMATSU is believed to be reliable. However, no responsibility is assumed for possible inaccuracies or omissions. Specifications are subject to change without notice. No patent rights are granted to any of the circuits described herein. ©2009 Hamamatsu Photonics K.K. www.hamamatsu.com HAMAMATSU PHOTONICS K.K., Solid State Division 1126-1 Ichino-cho, Higashi-ku, Hamamatsu City, 435-8558 Japan, Telephone: (81) 53-434-3311, Fax: (81) 53-434-5184 U.S.A.: Hamamatsu Corporation: 360 Foothill Road, P.O.Box 6910, Bridgewater, N.J. 08807-0910, U.S.A., Telephone: (1) 908-231-0960, Fax: (1) 908-231-1218 Germany: Hamamatsu Photonics Deutschland GmbH: Arzbergerstr. 10, D-82211 Herrsching am Ammersee, Germany, Telephone: (49) 08152-3750, Fax: (49) 08152-2658 France: Hamamatsu Photonics France S.A.R.L.: 19, Rue du Saule Trapu, Parc du Moulin de Massy, 91882 Massy Cedex, France, Telephone: 33-(1) 69 53 71 00, Fax: 33-(1) 69 53 71 10 United Kingdom: Hamamatsu Photonics UK Limited: 2 Howard Court, 10 Tewin Road, Welwyn Garden City, Hertfordshire AL7 1BW, United Kingdom, Telephone: (44) 1707-294888, Fax: (44) 1707-325777 North Europe: Hamamatsu Photonics Norden AB: Smidesvägen 12, SE-171 41 Solna, Sweden, Telephone: (46) 8-509-031-00, Fax: (46) 8-509-031-01 Italy: Hamamatsu Photonics Italia S.R.L.: Strada della Moia, 1/E, 20020 Arese, (Milano), Italy, Telephone: (39) 02-935-81-733, Fax: (39) 02-935-81-741 Cat. No. KSPD1073E02 Jun. 2009 DN 5