Lasing system with wavelength-conversion waveguide
US5617435A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 16, 1995 |
| Grant date | Apr 1, 1997 |
| Priority date | — |
| Expiry date | Mar 16, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S2301/145
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A semiconductor laser emits semiconductor laser light with TM-mode oscillation. The emitted semiconductor laser light is collimated by a first collimating lens, passes through a Brewster plate that is arranged so that the direction of Brewster plane's p-polarized light is in alignment with the direction of polarization of the emitted semiconductor laser light, and is coupled to an incident portion of a wavelength-conversion waveguide by means of a focusing lens. While being guided through the waveguide, the emitted semiconductor laser light is converted into second-harmonic light by means of a polarization inversion region. Semiconductor laser light emanating from an emitting portion of the waveguide reflects from an output mirror towards a diffraction grating, for modulation in wavelength. Second-harmonic light emanating from the emitting portion of the waveguide is outputted from the output mirror.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.