Coherent control of energy transfer in condensed phases by femtosecond phase-locked pulse pair

飞秒锁相脉冲对凝聚相能量传输的相干控制

• 批准号: 14540461
• 负责人: SATO Shin-ichiro
• 金额: $ 2.18万
• 依托单位: HOKKAIDO UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2002
• 资助国家: 日本
• 起止时间: 2002 至 2003
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-14540461/
• 关键词: coherent control; quantum control; phase locking; anthracene; homodimer; IVR; perylene; ペリレン; 干渉計; 量子位相制御; ダブルパルス; 液晶; アト秒

The intramolecular electronic excitation coherence created by the first femtosecond laser pulse in a linked anthracene dimer, dithia-1,5[3,3]-anthracenophane (DTA), was enhanced or depreciated by the interference with the second femtosecond laser pulse, which is phase-locked to the first pulse. Two anthracene rings in DTA are stacked parallel but with nearly orthogonal orientation. The interference intensity of fluorescence from DTA was measured as a function of delay tune between two pulses with the optical phase angle being fixed with 0° (in-phase) or 180° (anti-phase). Two components of enhanced and depreciated oscillations appeared in the sub-picoseconds region as a function of the delay tame, with the time periods depending on the excitation wavelength. On the basis of theoretical analysis, the two components were assigned to the sum and difference frequencies between the energy splitting of molecular eigenstates and the detuning of the laser frequency relative to the molecular electronic transition energy. The exciton splitting between the two superposition states of the local excitation was derived to be 2Δ=35cm^<-1>, which is in close agreement with our previous result (29cm^<-1>) obtained from fluorescence anisotropy decay measurement.

第二飞秒激光脉冲与第一飞秒激光脉冲的干涉增强或减弱了第一飞秒激光脉冲在二硫杂菲(DTA)中产生的分子内电子激发相干性，第二飞秒激光脉冲与第一脉冲锁相。差热分析中的两个蒽环是平行堆积的，但取向接近正交。测量了当光学相位角为0°(同相)或180°(反相)时，DTA产生的荧光干涉强度与两个脉冲之间的延迟时间的函数关系。作为延迟驯服的函数，在亚皮秒区域出现了增强和减弱振荡的两个分量，时间周期取决于激发波长。在理论分析的基础上，将这两个分量指定为分子本征态的能量分裂和激光频率相对于分子电子跃迁能量的失谐之和和差频。得到局域激发的两个叠加态之间的激子分裂为2Δ=35 cm^&lt；-1&gt；，这与我们以前用荧光各向异性衰变测量得到的结果(29 cm^-lt；-1&gt；)非常一致。

项目成果

Kasajima, T., Akimoto, S., Sato, S., Yamazaki, I.: "Vibrational Energy Relaxation in S_1 Perylene in Solution"The Journal of Physical Chemistry Part A. 108. 3268-3275 (2004)

Kasajima, T.、Akimoto, S.、Sato, S.、Yamazaki, I.：“溶液中 S_1 苝的振动能量弛豫”物理化学杂志 A. 108. 3268-3275 (2004)

Kasajima, T., Akimoto, S., Sato, S., Yamazaki, I.: "Evidence of vibrational relaxation from non-Boltzmann to Boltzmann distribution over v=0;1;2 levels in S_1 perylene in solution : Franck-Condon analysis of time-resolved fluorescence"Chemical Physics Let

Kasajima, T.、Akimoto, S.、Sato, S.、Yamazaki, I.：“溶液中 S_1 苝中 v=0;1;2 水平上从非玻尔兹曼分布到玻尔兹曼分布的振动弛豫的证据：Franck-Condon

Sato, S., Nishimura, Y., Sakata, Y., Yamazaki, I.: "Coherent Control of Oscillatory Excitation Transfer in Dithia-1,5[3,3]anthracenophane by a Phase-Locked Femtosecond Pulse Pair"The Journal of Physical Chemistry Part A. 107. 10019-10025 (2003)

Sato, S.、Nishimura, Y.、Sakata, Y.、Yamazaki, I.：“通过锁相飞秒脉冲对对 Dithia-1,5[3,3]anthracenophane 中的振荡激发传递进行相干控制”期刊

西村賢宣, 佐藤信一郎, 山崎巌: "位相ロックダブルパルスを用いた蛍光量子干渉測定装置の製作"分光研究. 52. 230-236 (2003)

Kennobu Nishimura、Shinichiro Sato、Iwao Yamazaki：“利用锁相双脉冲制造荧光量子干涉测量装置”光谱研究 52. 230-236 (2003)。

Kasajima, T., Akimoto, S., Sato, S., Yamazaki, I.: "Evidence of vibrational relaxation from non-Boltzmann to Boltzmann distribution over v=0,1,2 levels in S_1 perylene in solution : Franck-Condon analysis of time-resolved fluorescence"Chemical Physics Let

Kasajima, T.、Akimoto, S.、Sato, S.、Yamazaki, I.：“溶液中 S_1 苝中 v=0,1,2 水平上从非玻尔兹曼分布到玻尔兹曼分布的振动弛豫的证据：Franck-Condon