Coherent light generators – Particular beam control device – Q-switch
Patent
1993-08-18
1995-08-22
Bovernick, Rodney B.
Coherent light generators
Particular beam control device
Q-switch
372 10, 385 13, 385140, H01S 3121
Patent
active
054447232
ABSTRACT:
A length of an optical fiber having a core and a surrounding cladding is held by a block with a portion of said length having substantially all of its cladding removed on one side of the portion and being exposed, and an index overlay perturbation pad is mounted near and substantially parallel to the portion. A translator moves the pad between a first position in which the pad is sufficiently remote from the portion to allow total internal reflection in the portion and a second position in which the pad is sufficiently close to the portion to allow light to escape from the core. The pad may be made of a metal for polarized modulation, or of a dielectric for unpolarized modulation. The optical switch provides very fast switching for a O-switched fiber laser.
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Chandonnet, et al., "High-Power Q-Switched Erbium Fiber Laser Using an All-Fiber Intensity Modulator", Optical Engineering, vol. 32, No. 9, Sep. 1993, pp. 2031-2035.
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Chandonnet Alain
Larose Gilles
Bovernick Rodney B.
Institut National D'Optique
McNutt Robert
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