Intra-cavity high order harmonic laser
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United States of America Patent
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Jan 11, 1994
Grant Date -
N/A
app pub date -
Oct 9, 1991
filing date -
Oct 11, 1990
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An intra-cavity high order harmonic laser consists of a output coupler, total reflection mirror, and a laser medium disposed therebetween. The output coupler and the total reflection mirror form a resonator. At least two nonlinear crystals are disposed between the laser medium and the output coupler. One of the crystals acts as a frequency doubler, doubling the fundamental frequency of the laser and the other crystal acts as a frequency mixer or high order harmonic doubler in order to produce higher nth order harmonic (n.gtoreq.2). The invention overcomes the disadvantages associated with producing a high order harmonic laser beam in low peak power lasers such as CW lasers.
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