| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem that the conventional middle infrared laser has a high output but has the drawback of having no wavelength variability and on the contrary, a middle infrared optical parametric oscillator has a wavelength variability but has the drawback of having difficulty obtaining a high output. SOLUTION: When constructing an infrared light source by arranging crystals by difference frequency generation inside an optical parametric oscillator, a polarization inversion period is designed in consideration of the relationship on wavelength dispersion among individual crystals and the temperature expansion of each crystal, by using a pseudo-phase matching technology to make it possible to remarkably increase a temperature range of phase matching, and eventually to obtain a high output and a wavelength variability at the same time. By this technology, an infrared light source having a larger wavelength variability and a high output can be fabricated. COPYRIGHT: (C)2006,JPO&NCIPI |
