12 kW quasi-steady-state diamond Raman laser pumped by an M2 = 15 beam
At a Glance
Section titled “At a Glance”| Metadata | Details |
|---|---|
| Publication Date | 2019-05-09 |
| Journal | Optics Letters |
| Authors | Sergei Antipov, Alexander Sabella, Robert J. Williams, Ondřej Kitzler, David J. Spence |
| Institutions | Macquarie University, Defence Science and Technology Group |
| Citations | 40 |
Abstract
Section titled “Abstract”An external cavity diamond Raman laser with 1.2 kW output power is demonstrated for durations 7 times longer than the thermal lens time constant. An 83% slope efficiency and a 53% optical-to-optical efficiency were obtained for conversion from a 1.06 μm pump to the 1.24 μm first Stokes. The pump had an M<sup>2</sup> of 15, demonstrating that efficiency is maintained at the highest levels even when using exceptionally poor quality pumps. We show that a measured decrease in the output beam quality factor from M<sup>2</sup>=2.95 to M<sup>2</sup>=1.25 as power increased is evidence for thermal lens development in the diamond. The results foreshadow development of continuous-wave kilowatt-class lasers or amplifiers based on single diamond elements and pumped efficiently by lasers having poor spatial coherence such as line-narrowed diode laser arrays.
Tech Support
Section titled “Tech Support”Original Source
Section titled “Original Source”References
Section titled “References”- 2013 - Optical Engineering of Diamond [Crossref]