To generate ultra-wide band light pulses ranging from near IR light to near UV light.
In this method, the ultra-wide band light pulse generation having the wavelength conversion pulse formed by using the basic wave pulses emitted from an ultra-short pulse laser beam generator 1 of a pico second or below and converting this basic wave pulse so as to vary the central wavelength obtained by passing the basic wave pulse through a nonlinear optical material 6 from the basic wave pulse is executed. In such a case, the method includes a process of separating the wavelength conversion pulse and the basic wave pulse, a process of applying a time delay to the wavelength conversion pulse with respect to the basic wave pulse, a process of regulating a polarization direction with respect to the basic wave pulse and the wavelength conversion pulse, a process of regulating the pulse energy of the basic of the basic wave pulses and the wavelength conversion pulse, a process of superposing the separated basic wave pulse and the wavelength conversion pulse, and a process of making the superposed pulse waves incident on the nonlinear optical member 22 and propagating and emitting the pulse waves.
MORITA RYUJI
YAMASHITA MIKIO
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