LASER DEVICE AND LASER DEVICE CONTROL DATA

摘要

A laser device includes a resonator having a gain region, a first wavelength selection portion and a second wavelength selection portion, the first wavelength selection portion having a periodical peak in wavelength characteristics, the second wavelength selection portion having a periodical peak in wavelength characteristics in a wavelength range smaller than a variable range of an oscillation wavelength at a period different from the first wavelength selection portion and having a peak wavelength shift by a refractive index changing thereof, the oscillation wavelength selected with a single direction changing of a refractive index of the second wavelength selection portion changing in a single direction in a same wavelength range; a storing portion storing a value selected from an extent over two adjacent ranges of the plurality of the ranges as a setting value of a refractive index of the second wavelength selection portion for selecting an oscillation wavelength; and a controller giving the setting value stored in the storing portion to the resonator.