Laser apparatus and method for discriminating against higher order modes
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United States of America Patent
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Oct 18, 1988
Grant Date -
N/A
app pub date -
Dec 5, 1986
filing date -
Dec 5, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Disclosed is a laser apparatus and a related method for use with a laser medium of a type which emits a beam of coherent laser energy having both low and high order modes. End reflectors are provided for reflecting at least a portion of the energy in the beam back through the laser medium, and positive and negative lens elements are positioned on opposing sides of the lasing medium so that discrimination against the higher order modes is achieved by non-linearly amplifying the reflected beam portion passing through the lasing medium.
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