The resistance of photoconductive detectors depends on the incident light. PbSe has a particularly strong inner photoelectric effect: When infrared light reaches the lead selenide detector, the resistance is reduced. The detectors can be used uncooled at a wavelength of up to 4.7 µm. At room temperature, they exhibit a detectivity D* of greater than 10¹⁰. At low temperatures, they achieve an even higher performance level; in addition, the wavelength shifts to 5.2 µm.
PbSe photodetectors feature a good price-to-performance ratio at a high sensitivity and a good time constant.

Application Fields
PbSe detectors react very quickly and are thus particularly well suited for high-speed applications, such as, for example, the detection of hot spots. They are also used in medical gas analysis (CO₂ measurements), emissions measurements in the industrial field and the automobile industry, and in the measurement of moisture and hydrocarbons.

PB45/50/55 – LASER COMPONENTS’ PbSe Detectors

Lead selenide detectors are manufactured by the Laser Components Detector Group in the U.S.A. (i.e., in Arizona). The standard size of PbSe chips is 2 mm x 2 mm for all detector models. Other dimensions are available upon request.

PB45 is the uncooled series that detects radiation with a wavelength of between 1 µm and 4.7 µm.

PB50 refers to lead selenide detectors with Peltier cooling as low as -20°C and -30°C.

In the PB55 series, a Peltier cooling as low as -45°C is integrated.

RoHS Information

Please download our RoHS directives:

www.lasercomponents.com/fileadmin/user_upload/home/Datasheets/lc-lead-salt/rohs-directives-pbs-pbse.pdf

RoHS Directives