Laser device
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United States of America Patent
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Issued Date -
Feb 17, 2005
app pub date -
Jul 16, 2004
filing date -
Jul 16, 2003
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A laser device 1 is provided with: a solid sate laser medium made of GdVO.sub.4 or YVO.sub.4 to which Nd.sup.3+ is added, having first and second surfaces 10A, 10B facing each other; a high reflection film 12 formed on the first surface of the laser medium for reflecting light having a wavelength in a first wavelength range 880.+-.5 nm and in a second wavelength range from 910 nm to 916 nm; a reflecting means 20 placed in a manner where an optical resonator of which the resonance Q-value for light having a wavelength in the second wavelength range is greater than the resonance Q-value for light of every wavelength in a third wavelength range from 1060 nm to 1065 nm is formed together with the high reflection film and the laser medium is positioned within the resonator; and an excitation light source 22 that outputs light having a wavelength in the first wavelength range for exciting the laser medium. Laser device 1 is formed so that light from the excitation light source is guided into the resonator in a direction different from the optical axis direction of the resonator, and enters into the laser medium. As a result, a solid state laser device having a high light-emission efficiency can be implemented.
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