FIELD: instrument engineering.
SUBSTANCE: invention relates to the field of optoelectronic instrument making and relates to the laser radiation detector in the infrared range. Detector comprises arranged in housing and fixed in crystal holder receiving element based on semiconductor monocrystal of p-type, electrically connected ohmic contacts arranged at opposite ends of receiving element, high-frequency connector electrically connected to the recording instrument, and a switch for changing the working length of the receiving element electrically connected to the high-frequency connector. Receiving element has a length of more than one centimeter and is configured to accommodate on it with a predetermined interval of additional ohmic contacts. Switch is configured to be electrically connected to any pair of ohmic contacts.
EFFECT: high time resolution, enabling detection of laser pulses in the sub-nanosecond region and simplification of the measurement system.
9 cl, 4 dwg
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