System for transmitting and monitoring laser light and method fo

Details System for transmitting and monitoring laser light and method fo System for transmitting and monitoring laser light and method fo

1992-10-29

1994-06-21

Ben, Loha

Optical: systems and elements

Lens

With light limiting or controlling means

359589, 359634, 359726, 359738, 250205, 21912162, G02B 900, B23K 2600

Patent

active

053232690

ABSTRACT:
A system and method for transmitting and monitoring laser light includes a laser for emission of a first beam with a given wavelength into a transmission path. A second beam is generated with a wavelength differing from the given wavelength. The second beam is coupled into the transmission path of the first beam and the first and second beams are superimposed in a propagation direction. The second beam is wavelength-selectively reflected in the transmission path as a reflected second beam. The reflected second beam is decoupled from the transmission path. A detector is provided for the reflected second beam. An interruptor is operatively connected to the detector for interrupting the first beam.

REFERENCES:
patent: 4423726 (1984-01-01), Imagawa
patent: 4844574 (1989-07-01), Chande
patent: 4845354 (1989-07-01), Gupta et al.

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