Patent ID: 6011809
Filing Date: 2000-01-04
Classification: G02F

Abstract:
A continuous variable wavelength laser apparatus including an optical parametric oscillator having a pivotally arranged nonlinear optical crystal and an excitation laser light source, comprising:pivoting means for pivoting said nonlinear optical crystal; anda ring type resonator including a mirror for transmitting an excitation laser beam emitted from said excitation laser light source and reflecting a portion of a laser beam whose wavelength is converted by said nonlinear optical crystal while transmitting the rest of the laser beam, at least two prisms for reflecting the wavelength-converted laser beam, and an angle calibration prism for compensating the optical path of the laser beam so that an incident angle of the wavelength-converted laser beam on said mirror is set as a Brewster angle, said ring type resonator resonating the wavelength-converted laser beam,wherein an incident angle of the excitation laser beam on said mirror is set as a Brewster angle.