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- Title
Nonstationary Raman amplification of superluminescence in crystals.
- Authors
Karasik, A.; Chunaev, D.
- Abstract
The sequential excitation of LiF crystals with F color centers and KGd(WO4)2 crystals by 1047-nm laser pulses with a duration of 22 ps is investigated. Broadband (275 cm−1) Stokes superluminescence appearing in the fluoride crystal undergoes nonstationary Raman amplification in the oxide crystal. The amplified pulses with a Stokes frequency shift of 767 cm−1, a duration of 7 ps, and a power up to ∼1.1 MW have high spatial and time coherence and exhibit time delay increasing from ∼1 to 4.5 ns with a decreasing pump power. The results are discussed in terms of the cooperative Raman scattering.
- Subjects
CRYSTALS; ULTRASHORT laser pulses; RAMAN effect; COLOR centers (Crystals); LUMINESCENCE; FLUORIDES; COHERENCE (Optics)
- Publication
JETP Letters, 2007, Vol 85, Issue 7, p315
- ISSN
0021-3640
- Publication type
Article
- DOI
10.1134/S0021364007070028