Coherent light generators – Particular active media – Active media with particular shape
Patent
1996-11-27
1998-09-29
Bovernick, Rodney B.
Coherent light generators
Particular active media
Active media with particular shape
H01S 306, H01S 307
Patent
active
058155236
ABSTRACT:
A variable power laser device includes a lasing medium having first and second end faces disposed parallel to one another, N side faces extending between the first and second end faces and a bevel face located at an intersection between the second end and one of the side faces, a first mirror separate from the first end face for directing a laser beam into the lasing medium so as to permit the laser beam to follow a helical transmission path defined by the N side faces, the transmission path being longer than the length of any of the N side faces, and a second mirror separate from the second end face for receiving an amplified laser beam output by the lasing medium and reflecting the amplified laser beam in a predetermined direction, wherein N is an integer greater than or equal to 3. The output power of the amplified laser beam is dependent on the number of loops in the transmission path. The tilt angle of the first mirror can be selectively adjusted to thereby selectively vary the number of loops in the helical transmission path, and, thereby selectively vary the power of the output laser beam. The laser device can include one or more laser diode arrays for pumping the lasing medium.
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Bovernick Rodney B.
McDonnell Douglas Corporation
Powell Raymond
Westerlund Robert
Wise Robert E.
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