Abstract
An external cavity structure based on the -1st transmission grating is introduced to spectral beam combining a 970 nm diode laser bar. A CW output power of 50.8 W, an electro-optical conversion efficiency of 45%, a spectral beam combining efficiency of 90.2% and a holistic M2 value of 10.9 are achieved. This shows a way for a diode laser source with several KW power and diffraction-limited beam quality at the same time.
| Original language | English |
|---|---|
| Pages (from-to) | 3627-3632 |
| Number of pages | 6 |
| Journal | Optics Express |
| Volume | 21 |
| Issue number | 3 |
| DOIs | |
| State | Published - Feb 11 2013 |
| Externally published | Yes |