Wavelength tunable laser and optical tomography system using the wavelength tunable laser
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United States of America Patent
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Jun 19, 2012
Grant Date -
Oct 11, 2007
app pub date -
Mar 22, 2007
filing date -
Mar 22, 2006
priority date (Note) -
Expired
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Abstract
An external resonator type wavelength tunable laser has a laser medium, a dispersion system which spatially disperses light emitted from the laser medium by wavelength, and a wavelength selecting system having a reflecting surface which selectively reflects a part of the light which is reflected by the reflecting surface as a return light, and the wavelength selecting system is structured so that the inverse of a number of a wavelength of the return light linearly changes with time.
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