Coherent light generators – Particular beam control device – Mode discrimination
Reexamination Certificate
2007-01-02
2007-01-02
Rodriguez, Armando (Department: 2828)
Coherent light generators
Particular beam control device
Mode discrimination
C372S039000
Reexamination Certificate
active
10372836
ABSTRACT:
As a composite laser rod capable of satisfying the positional stability and output stability of a laser beam, a laser rod in which a laser active element is doped is intimately inserted into a hollow portion of a non-doped ceramic pipe that has a crystal structure the same as the laser rod followed by baking so as to remove a gap and strain at an interface between the laser rod and the ceramic pipe after the baking further followed by polishing a surface of the ceramic pipe to form a ceramic skin layer, and thereby a composite laser rod is formed. In the composite laser rod, an influence due to fluctuation in the cooling capacity of cooling water or a heat sink is averaged by a non-doped skin layer, temperature fluctuation of the laser rod is suppressed, and an influence of vibration from the cooling water or a cooling fan can be suppressed. When the refractive index of the laser rod is made higher than that of the ceramic pipe, a high efficiency oscillation can be realized, and furthermore when the thermal conductivity of the ceramic pipe is made higher than that of the laser rod, the thermal lens effect can be alleviated.
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Kouta Hikaru
Kudo Shuetsu
Mukaihara Katsuji
Suzuki Yoshikazu
Tsunekane Masaki
Konoshima Chemical Co. Ltd.
NEC Corporation
Rodriguez Armando
Sughrue & Mion, PLLC
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