Patent ID: 6731666
Filing Date: 2004-05-04
Classification: H01S

Abstract:
A laser device including an amplifying section in which a laser medium is amplified to oscillate laser light, comprising:a prism having a solid non-reflective portion which is provided on approximately a center portion and transmits the laser light at high transmissivity, and a total reflecting portion which is provided outside a perimeter of said non-reflective portion and reflects the laser light at high reflectivity, wherein said prism separates part of the laser light oscillated in said amplifying section, and shapes a beam form of the laser light into a desired form to output the same, and a resonator having a partial reflecting front mirror which is provided at one side of said amplifying section, and a narrowing section composed of said prism and a grating which is provided at another side of said amplifying section, wherein said resonator is constituted by said front mirror and said grating so as to expand the laser light outputted from said amplifying section and input the laser light to said grating.