Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1539628 | Optics Communications | 2009 | 4 Pages |
Abstract
Incoherent combining of multiple laser beams with offset wavelengths into a single near-diffraction-limited beam is an effective solution to increasing energy brightness and scaling output power of high-power lasers. Volume Bragg gratings (VBGs) recorded in photo-thermo-refractive (PTR) glass allow spectral beam combining with a remarkably high spectral density of channels. Spectral beam combining (SBC) of five channels within 1–2 nm bandwidth around 1064 and 1550 nm into a single near-diffraction-limited beam with absolute efficiency 92–94% is demonstrated. Scaling of this technique to multi-kW power level is discussed.
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
Oleksiy Andrusyak, Vadim Smirnov, George Venus, Leonid Glebov,