Broadband collimated generation in YAG:Yb crystal and ytterbium glass under LiF:F+2 color center laser pumping
✍ Scribed by N.E. Bykovsky; Yu.V. Senatsky
- Publisher
- John Wiley and Sons
- Year
- 2008
- Tongue
- English
- Weight
- 620 KB
- Volume
- 5
- Category
- Article
- ISSN
- 1612-2011
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✦ Synopsis
Nanosecond pulses of broadband collimated generation in the wavelength region of 1.0-1.06 µm were observed at focusing the pump radiation from LiF:F + 2 color center laser onto the plates from YAG:Yb crystal or Yb-doped phosphate glass. Spectra of the widths up to 200 Å for YAG:Yb and up to 500 Å for glass were registered. The angular divergence (10 -3 -10 -4 rad) of broadband radiation from the emitting area of 100-200 µm in diameter was by 1-2 orders of magnitude smaller than the diffraction limit corresponding to this area. Physical mechanism responsible for the occurrence of highly collimated broadband lasing under stimulated Brillouin scattering (SBS) of the pump radiation in the active medium is discussed. 1.01 µm 1.02 µm 1.03 µm 1.04 µm 1.05 µm 2 mm Spectra of Yb-doped phosphate glass generation