Multiphoton-excited measuring device

Abstract

A multiphoton-excited measuring device measuring a sample with the use of a multiphoton absorption phenomenon by optical pulses having high intensity, comprising a short pulse light sourceemitting optical pulses; an irradiation optical systemirradiating a samplewith optical pulses emitted from the short pulse light source; a detectordetecting signal light generated, in association with multiphoton excitation, from the sampleby the irradiation with optical pulses; and an optical pulse compression meanscompressing a pulse width, with the use of intensity-dependent nonlinear effects of the optical fiber, so that a pulse width of optical pulses with which the sampleis to be irradiated is shorten to equal to or narrower than that of optical pulses emitted from the short pulse light sourceand so that a spectral width of optical pulses with which the sampleis to be irradiated is wider than that of optical pulses emitted from the short pulse light source, which makes it possible to stably irradiate, with the use of easy-to-use short pulse light source, a sample with optical pulses having higher peak intensity and a shorter temporal width and measure the sample easily with high accuracy without requiring sophisticated laser techniques and skills.