ULTRAWIDE-BAND LIGHT PULSE GENERATION METHOD

摘要

A method of generating light pulses in an ultrawide band ranging from near- infrared to near-ultraviolet regions. Fundamental sub-picosecond pulses emitted from ultrashort pulse laser (l) are passed through a nonlinear optic al material (6) to produce wavelength-converted pulses whose center wavelength is different from that of the fundamental pulses. The method comprises the step s of separating the converted pulses from the fundamental pulses, delaying the converted pulses relative to the fundamental pulses, adjusting the polarization of the converter or fundamental pulses, adjusting the energy of the fundamental and converted pulses, multiplexing the separated fundamental and converted pulses, and allowing the multiplexed pulses to pass through a nonlinear optical material (22).