Patent ID: 6813306
Filing Date: 2004-11-02
Classification: H01S

Abstract:
A solid-state laser device, comprisinga first optical axis, a second optical axis crossing said first optical axis, a first resonator arranged on said first optical axis for oscillating a first fundamental wave &lgr;1 between a distance L1 from a first concave mirror having a reflection surface with curvature R1 to a plane output mirror, a second resonator arranged on said second optical axis for oscillating a second fundamental wave &lgr;2 between a distance L2 from a second concave mirror having a reflection surface with curvature R2 to said plane output mirror, a first light emitter for entering an excitation light to said first resonator, a second light emitter for entering an excitation light to said second resonator, a wavelength separating plate arranged on a portion where said first optical axis crosses said second optical axis and for deflecting said second optical axis so as to form a common optical axis portion which is commonly used by said first optical axis and said second optical axis, and an optical crystal for wavelength conversion arranged on said common optical axis portion, wherein said output plane mirror is arranged on said common optical axis portion and is commonly used by said first resonator and said second resonator, said optical crystal for wavelength conversion is arranged on said common optical axis portion between said plane output mirror and said wavelength separating plate, said wavelength separating plate transmits the first fundamental wave, and reflects the second fundamental wave on said common optical axis portion, said first resonator and said second resonator have a relation of &lgr;12 L1(R1âˆ’L1)=&lgr;22 L2 (R2âˆ’L2), and beam waists of said first resonator and a beam waist of said second resonator are formed on said optical crystal for wavelength conversion.