Monolithic diamond Raman laser
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2015-03-03 |
| Journal | Optics Letters |
| Authors | Sean Reilly, Vasili G. Savitski, Hangyu Liu, Erdan Gu, Martin D. Dawson |
| Institutions | University of Strathclyde, Photonics (United States) |
| Citations | 48 |
Abstract
Section titled āAbstractāA monolithic diamond Raman laser is reported. It utilizes a 13-mm radius of curvature lens etched onto the diamond surface and dielectric mirror coatings to form a stable resonator. The performance is compared to that of a monolithic diamond Raman laser operating in a plane-plane cavity. On pumping with a compact Q-switched laser at 532 nm (16 Ī¼J pulse energy; 1.5 ns pulse duration; 10 kHz repetition-rate; M<sup>2</sup><1.5), laser action was observed at the first, second, and third Stokes wavelengths (573 nm, 620 nm and 676 nm, respectively) in both cases. For the microlens cavity, a conversion efficiency of 84% was achieved from the pump to the total Raman output power, with a slope efficiency of 88%. This compares to a conversion efficiency of 59% and a slope efficiency of 74% for the plane-plane case. Total Raman output powers of 134 and 96 mW were achieved for the microlens and plane-plane cavities, respectively.