Self-frequency-doubler laser element
US5390201A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Dec 3, 1993 |
| Grant date | Feb 14, 1995 |
| Priority date | — |
| Expiry date | Dec 3, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S3/1095
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A self-frequency-doubler laser element having a three-dimensional optical waveguide includes a first transparent insulating substrate having both a DFB grating and a grating reflector formed on one side of the DFB grating, a Nd.sup.3+ -ion-doped thin glass film laid over the first transparent insulating substrate, a thin nonlinear optical film laid over the thin glass film, a second transparent insulating substrate laid over the thin nonlinear optical film, and a thin reflecting film laid over the second transparent insulating substrate, wherein the following conditions are satisfied: nf-ng=0.01 to 0.05, and nf and ng are greater than ns and nc, where ns, ng, nf, and nc are the refractive indices of the first transparent insulating substrate, the thin glass film, the thin nonlinear optical film, and the second transparent insulating substrate, respectively. The optical waveguide generates a laser fundamental harmonic, converts it to a second higher harmonic having a wavelength one-half of the laser fundamental harmonic, and emits the second higher harmonic.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.