Patent ID: 7212275
Filing Date: 2007-05-01
Classification: G02F,G03F,H01S

Abstract:
1. A laser apparatus comprising: a laser light generation section that includes a single wavelength oscillatory laser and which generates pulsed light having a single wavelength within a wavelength range ranging from about 1.51 μm to about 1.59 μm; an optical amplification section that includes an optical fiber amplifier and is optically connected to the laser light generation section to amplify the pulsed light; a wavelength conversion section that includes a nonlinear optical crystal and is optically connected to the optical amplification section to perform wavelength conversion of the amplified pulsed light into ultraviolet light; and a suppressing section that suppresses expansion of a wavelength width of light originated in a nonlinear effect of an optical element between the single wavelength oscillatory laser and the wavelength conversion section.