H - Electricity – 01 – S
Patent
H - Electricity
01
S
345/46
H01S 3/098 (2006.01) H01S 3/10 (2006.01) H01S 3/136 (2006.01) H01S 3/137 (2006.01) H01S 3/225 (2006.01)
Patent
CA 2022672
ABSTRACT OF THE DISCLOSURE According to the invention, a probe laser beam having a wavelength which is different from that of the laser beam emitted from an laser apparatus is introduced into the apparatus to adjust the optical device so that any fluctuations in the probe laser beam passing through or reflected from the optical device may be eliminated. Therefore, any fluctuations in output power and/or the oscillation wavelength of the narrowed bandwidth laser beam emitted from the apparatus can be directly detected and the laser apparatus can be so controlled as to ensure a stabilized operation under an optimum condition.
Mitsui Petrochemical Industries Ltd.
Smart & Biggar
Terada Mitsugu
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