Corner-pumping method and gain module for high power slab laser
US7388895B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 21, 2003 |
| Grant date | Jun 17, 2008 |
| Priority date | — |
| Expiry date | Aug 6, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S3/2316
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Corner pumping method and gain module for high power slab laser are disclosed. In one embodiment, said method comprises directing a pump light from one or more pump light sources each consisting of a high power diode array and its coupling system into a laser slab through prior cut slab corners of said laser slab without restriction to the incident angle or the polarization state of the pump light, wherein said laser slab includes an undoped circumambient portion and one or more doped central portions; propagating said pump light within the laser slab by total internal reflection (TIR), wherein said pump light firstly pass said undoped circumambient portion, secondly pass said doped central portion, thirdly pass said undoped circumambient portion again, and fourthly take inner reflection at the surface of said undoped circumambient portion, and by repeating these steps, achieve multi-pass absorption; and substantially absorbing the pump light during propagating. In another embodiment, said gain module comprises a laser slab formed by solid state laser material, said laser slab including an undoped circumambient portion and one or more doped central portions and prior cut slab corne…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.