Low power infrared laser intrusion systems

Details Low power infrared laser intrusion systems Low power infrared laser intrusion systems

1974-10-23

1976-06-22

Borchelt, Archie R.

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

250338, G01J 100

Patent

active

039653552

ABSTRACT:
A laser intrusion system incorporating a relatively long wavelength infra-red laser, a beam path, a quantum amplifier, a detector, and associated optical and electronic components is described. The relatively long wavelength of the laser radiation and the high gain and narrow bandwidth of the quantum amplifier make the system relatively immune to environmental conditions such as fog and rain and particularly applicable for long range, all-weather, outdoor use.

REFERENCES:
patent: 3704461 (1972-11-01), Rose et al.
patent: 3711846 (1973-01-01), Schlisser et al.
patent: 3816745 (1974-06-01), Primm et al.
patent: 3825916 (1974-07-01), Steele et al.
patent: 3863070 (1975-01-01), Wheeler et al.

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