Phase grating and mode-selecting mirror for a laser
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United States of America Patent
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Apr 28, 1998
Issued Date -
N/A
app pub date -
Jul 16, 1996
filing date -
May 6, 1994
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Method for making a custom phase-conjugating diffractive mirror for a laser resonator comprising the steps of: (a) choosing a specified beam mode profile a.sub.1 (x,y) that will suit need of said designer, (b) calculating the mode profile b(x',y') which is a value of the specified beam a.sub.1 (x,y) that is propagated to the reflection surface of the diffractive mirror and (c) calculating mirror reflectance t(x',y') which reflects phase conjugate of b(x',y'). A method for fabricating such a mirror is shown. Another aspect of the invention is the addition of a phase adjusting element into a laser resonator, and compensating for the addition of a phase adjusting element in the design of other phase-adjusting elements such as the mirrors.
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