WAVELENGTH SCANNING PULSE LIGHT SYNCHRONIZING SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide a wavelength scanning pulse light synchronizing system for synchronizing two pulse light beams for use in a raman scattering microscope and the like.SOLUTION: The wavelength scanning pulse light synchronizing system for synchronizing first pulse light generated from a first laser resonator with second pulse light generated from a second laser resonator and applying them to a sample includes: an acoustooptic wavelength-variable filter 41 provided inside the second laser resonator; and tiltable light transmission plates 39 and 40 provided on an optical path of the second laser resonator. The tilt amount of the light transmission plates is determined such that the length of the laser resonators is determined according to a frequency of voltage applied to the acoustooptic wavelength-variable filter 41. The wavelength scanning pulse light synchronizing system further includes: a pulse synchronization detector for detecting a time difference between the first pulse light and the second pulse light; and a piezoelectric element (laser resonator length adjusting means) 30 provided on a reflection mirror inside the second laser resonator and operating to decrease the time difference detected by the pulse synchronization detector.