Laser pump cavity apparatus with integral concentrator and method
US6055260A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 19, 1997 |
| Grant date | Apr 25, 2000 |
| Priority date | — |
| Expiry date | Dec 19, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S3/094084
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A laser pump cavity apparatus with integral concentrator provides uniform gain and high absorption efficiency. The apparatus has a doped solid-state laser medium, a concentrator which has a top cladding layer formed on the top surface of the doped laser medium having a cylindrical focusing surface, a bottom cladding layer formed on the bottom surface of the doped laser crystal having a cylindrical focusing surface, and edge cladding layers formed on the side surfaces of the doped laser medium. Cold plates, each of which also preferably has one cylindrical surface of substantially identical shape, are placed in thermal contact with the cylindrical focusing surfaces of the top and bottom cladding layers to absorb heat. The cylindrical focusing surfaces preferably have hyperbolic or quasi-hyperbolic shape. The laser pump cavity apparatus is preferably edge-pumped with several laser diode arrays focused toward the line foci of the cylindrical focusing surfaces in directions transverse to a laser beam axis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.