研究・研究者
研究会・セミナー
| 演 題 | 「Cascade lasing effects in crystals」 |
|---|---|
| 日 時 | 2006年02月16日(木) 10:30 より 12:30 まで |
| 講演者 | Prof. Alexander A. Kaminskii, Ph.D. (Institute of Crystallography, Russian Academy of Sciences, Moscow) |
| 場 所 | 研究棟２０１セミナー室 |
| 概 要 |
In the last years there has been significant interest in cascaded self-frequency conversion lasing effects in doped (by Ln and TM ions) and un-doped insulating inorganic and organic crystals. Among these laser and nonlinear-laser phenomena are different two- and many-stage cascaded processes: direct- and cross-cascaded lasing transitions between Stark levels of few 2S+1LJ-manifolds in one or several Ln3+ lasants, self-frequency doubling, self-SRS generation, etc. These effects have the possibility of creating a new generation of solid-state laser sources, which can operate at specific and otherwise hard to reach wavelengths over a wide spectral range. In this lecture I want to show also recent results on many-stage X(3) <-> X(2) cascaded generation in many un-doped and Ln3+-doped non-centrosymmetric crystals with different structure (e.g.:BBO, Y(COO)3.2H2O, Li2SO4.H2O, NaClO3, AANP, β-LaBGeO5:Nd3+, etc). These X(3) and X(2) nonlinear phenomena can also help in the developments of new operating laser schemes and type of lasers with the aim to obtain unusual generation regimes. |
