Optical wavelength conversion method, optical wavelength conversion system, program and medium, and laser oscillation system
US7227680B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 23, 2002 |
| Grant date | Jun 5, 2007 |
| Priority date | — |
| Expiry date | Oct 12, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/3534
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
In an optical wavelength converting method in which light from a laser oscillator that oscillates coherent light of an inherent wavelength λ is employed as incident light, and is made to input to a nonlinear optical crystal, and light having a wavelength of ½λ is radiated, the wavelength of the incident light is 1000 nm or less, and the peak power density of the incident light is 0.1–10 fold greater than the peak power density that provides the maximum conversion efficiency. The nonlinear optical crystal is heated to and maintained at 200–600° C. Prescribed fundamental waves are input to a first crystal and a second crystal sequentially. The first crystal has a higher bulk damage threshold value with respect to the fundamental waves than that of the second crystal. The second crystal has a higher effective nonlinear constant with respect to the fundamental waves than that of the first crystal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.