Patent · US Active

Enhanced optical pumping of materials exhibiting polarization-dependent absorption

US8542713B2 · kind B2 · utility

2Cited by

8References

10Claims

0Family size

Assignee

Coherent Kaiserslautern GmbH · DE

Inventors

Achim Nebel · Trippstadt, DE
Ralf Knappe · Kaiserslautern, DE
Louis McDonagh · Kaiserslautern, DE

Key dates

Filing date	May 28, 2004
Grant date	Sep 24, 2013
Priority date	—
Expiry date	Mar 14, 2027

Classification

Technology area (CPC H)Electricity
CPC primaryH01S3/1673
WIPO fieldOptics
WIPO sectorInstruments

Abstract

An optically pumped laser oscillator or amplifier including a laser head including a gain medium exhibiting polarization-dependent absorption along two crystallographic axes and a pump source producing a pump beam. The medium's absorption coefficients along both of the crystallographic axes are equal or the difference between the absorption coefficients relative to the lowest absorption coefficients is reduced at least by a factor of two compared to the same relative difference between the two absorption coefficients at the medium's absorption peaks. In some embodiments, the gain medium is a crystal, e.g., a Neodymium-doped Vanadate (Nd:YVO4) crystal, greater than 15 mm. In various embodiments, the optically pumped laser oscillator or amplifier includes two pump sources producing two pump beams.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.