Detector for Q-switched laser radiation
A detector for detecting radiation from a Q-switched laser is disclosed. The detector comprises a plurality of silicon photo-diodes which develop an output signal when struck by incident radiation from the Q-switched laser. The output of the photo-diodes is connected to a pulse-width discriminator and a pulse-amplitude discriminator. The pulse-width discriminator generates an output signal only if the amplitude of the output pulse from the photo-diodes is less than 300 nanoseconds, signifying an input pulse from a Q-switched laser. The pulse-amplitude discriminator develops an output signal only when the photo-diode is saturated, again, indicating radiation from a Q-switched laser. The presence of a signal from either the pulse-width discriminator or the pulse-amplitude discriminator indicates that the incident radiation on the photo-diode was indeed from a Q-switched laser.
- Assignee:
- U S Of America Army Secretary Of
- Patent Number(s):
- US 4276472
- Application Number:
- TRN: 82-004204
- OSTI ID:
- 5734273
- Resource Relation:
- Patent File Date: Filed date 15 Oct 1979
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
LASER RADIATION
RADIATION DETECTION
RADIATION DETECTORS
DESIGN
LASERS
PHOTODIODES
PULSE DISCRIMINATORS
PULSES
Q-SWITCHING
SILICON
DETECTION
DISCRIMINATORS
ELECTROMAGNETIC RADIATION
ELECTRONIC CIRCUITS
ELEMENTS
MEASURING INSTRUMENTS
PULSE CIRCUITS
RADIATIONS
SEMICONDUCTOR DEVICES
SEMICONDUCTOR DIODES
SEMIMETALS
420300* - Engineering- Lasers- (-1989)
440101 - Radiation Instrumentation- General Detectors or Monitors & Radiometric Instruments