Coherent light generators – Particular beam control device – Producing plural wavelength output
Patent
1996-12-09
1998-11-24
Healy, Brian
Coherent light generators
Particular beam control device
Producing plural wavelength output
372 20, 372 21, 372 69, 372 70, 372 71, H01S 310
Patent
active
058418016
ABSTRACT:
In order to make an attempt to reduce the size of the laser and to simplify the structure, in a double wavelength laser of the invention, when an optical path switching mirror 3 is located at a position where light is not reflected, emitted light of a laser diode 1 is converted into parallel light with a collimator lens 2, light is collected to an Er: YAG crystal 6 with a collector lens 4 for pumping, light output by the pumping of the Er: YAG crystal 6 is amplified with a total reflective mirror 5 and an output mirror 7 and passes through a folded mirror 8 from the output mirror 7, and light is guided to a light guide unit 10 with a collector lens 9 to be emitted outside, and when the optical path conversion mirror 3 is located at a position where light is reflected, the emitted light of the laser diode 1 is reflected in 90 degrees direction with the optical path switching mirror 3 and is guided to the light guide unit 10 with a collector lens 11 to be emitted outside.
Healy Brian
NEC Corporation
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