Abstract
Brightness enhancement in an external cavity diamond Raman laser designed for high power conversion of a neodymium (1064 nm) laser to the eye-safe spectral region is reported. Using a multimode input beam pulsed at 36 kHz pulse repetition frequency, 16.2 W with 40% overall conversion efficiency was obtained at the second Stokes wavelength of 1485 nm. The output beam had a quality factor of M2=1.17±0.08 which is a factor of 2.7 times lower than that of the input beam, resulting in a higher overall brightness. The output power, brightness, and brightness enhancement obtained represent significant advances in performance for Raman lasers as well as other competing kHz-pulsed eye-safe technologies. Brightness enhancement in an external cavity diamond Raman laser designed for high power conversion of a neodymium laser to the eye-safe spectral region is reported. Using a multimode input beam pulsed at 36 kHz pulse repetition frequency, 16.2 W with 40% overall conversion efficiency was obtained at the second Stokes wavelength of 1485 nm. The output power, brightness, and brightness enhancement obtained represent significant advances in performance for Raman lasers as well as other competing kHz-pulsed eye-safe technologies.
| Original language | English |
|---|---|
| Pages (from-to) | L37-L41 |
| Number of pages | 5 |
| Journal | Laser and Photonics Reviews |
| Volume | 8 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - May 2014 |
Keywords
- Brightness conversion
- Diamond
- Eye-safe
- High power lasers
- Raman laser
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