Manufacturing method for QPM wavelength converter elements, QPM wavelength converter element, and medical laser apparatus using it
US7329316B2 · kind B2 · utility
2Cited by
6References
13Claims
0Family size
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Key dates
| Filing date | Mar 9, 2004 |
| Grant date | Feb 12, 2008 |
| Priority date | — |
| Expiry date | May 3, 2026 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B18/20
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A manufacturing method for quasi phase matching (QPM) wavelength converter elements using crystal quartz as a base material in which twins are periodically induced, comprises a step of periodically inducing the twins by applying a stress onto a crystal quartz substrate as the base material so that an angle θ of a direction in which the stress is applied relative to a Z axis of the crystal quartz is 60°<θ<90°.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.