- 作者: Masahiro Kawasaki
- 中文摘要:
Department of Molecular Engineering, Kyoto University, Kyoto 606-8501, Japan
We have demonstrated alignment of neutral molecules by nonresonant IR laser pulse, bleaching of electronically excited states by resonant IR laser pulse and photoabsorption control of ground state molecules by phase of incident light. The electric field of a pulsed laser is used for alignment that is demonstrated by measurement of the control of the anisotropy of photofragments generated by polarized light. The angular distribution of I(2P3/2) atoms from the photodissociation of CH3I at 304 nm was measured with alignment by the 1.06 mm laser pulse excitation:
CH3I + hn(UV + IR) R CH3 + I(2P3/2).
By the alignment, the photodissociation branching ratio of Cl(2P3/2) and Cl*(2P1/2) was controlled in the photodissociation of Cl2 at 404 nm. The 1.06 mm laser pulse excitation of the photoprepared OCS at 230 nm bleaches the formation of CO(X1S+, J) + S(1D) and induces a new excitation pathway by an upconversion process:
OCS(v=0) + hn(UV) + 2hn(IR) R CO(X1S+, J~74) + S(1S).
The phenomenon of interference of the amplitude for absorption of one photon of frequency 3w (201 nm) and the amplitude for absorption of three photons of frequency w (603 nm) was successfully applied to ammonia, alkylamines, cyclooctatetraene and 1,1-dimethylhydrazine. - 英文摘要: --
- 中文關鍵字: --
- 英文關鍵字: --