Closely in the infrared the wide band wave length variable

摘要

PROBLEM TO BE SOLVED: To provide a wide band wavelength tunable laser beam generator which is a laser light source having a tunable wavelength in a wide band in a near infrared area utilizing the nonlinear optical effect of silica (glass) fibers and has extra-wide band wavelength tunability, not easily be achieved by a conventional wavelength tunable laser and generates coherent light which can continuously sweep the overall wavelength area by easy mechanical operation of a single wavelength selection element and has the emission direction fixed independently of wavelength. ;SOLUTION: The wide band wavelength tunable laser beam generator is the laser light source having the tunable wavelength in a wide band in a near infrared area utilizing the nonlinear optical effect of silica optical fibers 8 and has extra-wide band wavelength tunability and generates coherent light capable of sweeping the overall wavelength area by a single wavelength selection element 10.;COPYRIGHT: (C)2003,JPO