Apparatus and methods for using achromatic phase matching at high orders of dispersion
US6288832A · kind A · utility
Inventors
Key dates
| Filing date | Nov 5, 1998 |
| Grant date | Sep 11, 2001 |
| Priority date | — |
| Expiry date | Nov 5, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2203/04
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Achromatic phase-matching (APM) is used for efficiently multiplying the frequency of broad bandwidth light by using a nonlinear optical medium comprising a second-harmonic generation (SHG) crystal. Stationary optical elements whose configuration, properties, and arrangement have been optimized to match the dispersion characteristics of the SHG crystal to at least the second order. These elements include a plurality of prismatic elements for directing an input light beam onto the SHG crystal such that each ray wavelength is aligned to match the phase-matching angle for the crystal at each wavelength of light to at least the second order and such that every ray wavelength overlap within the crystal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.