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Volumn 129, Issue 43, 2007, Pages 13014-13021

Pump-shaped dump optimal control reveals the nuclear reaction pathway of isomerization of a photoexcited cyanine dye

Author keywords

[No Author keywords available]

Indexed keywords

ABSORPTION; CHEMICAL REACTIONS; EXCITED STATES; MOLECULAR DYNAMICS; PHOTOEXCITATION; PHOTOISOMERIZATION;

EID: 35848938505     PISSN: 00027863     EISSN: None     Source Type: Journal    
DOI: 10.1021/ja072639+     Document Type: Article
Times cited : (36)

References (58)
  • 47
    • 35848945818 scopus 로고    scopus 로고
    • The differential absorption signal reflecting photoisomerformation at a 30 ps delay without dump pulse was measured to be 7 × 10-4, while the maximum dump-induced change is 16 × 10-5. Thus, 0.16/0.70, 22
    • -5. Thus, 0.16/0.70 = 22%.
  • 49
    • 35848941822 scopus 로고    scopus 로고
    • See Supporting Information
    • See Supporting Information
  • 50
    • 35848969435 scopus 로고    scopus 로고
    • Using the optimized pulse train, about 18% more efficient dumping as compared to the use of the reference dump was achieved. This corresponds to 15, 18% x (1, 0.15) more efficient dumping when referenced to the ΔA signal without any dump. So the efficiency of the optimized pulse compared to the reference pulse is equal to the total dumping, i.e, dumping of reference pulse (15, and dumping compared to reference pulse (0.15, divided by the dumping of the reference pulse, i.e, 15, Thus the optimized pulse is twice as efficient in dumping compared to the 500-fs delayed reference pulse. Compared to the dumping efficiency of an optimally timed, transform limited reference pulse, optimal control results in dump-pulse shapes whose dump efficiency is still (0.15, 0.15)/0.22 ≈ 1.4 times larger
    • Using the optimized pulse train, about 18% more efficient dumping as compared to the use of the reference dump was achieved. This corresponds to 15% = 18% x (1 - 0.15) more efficient dumping when referenced to the ΔA signal without any dump. So the efficiency of the optimized pulse compared to the reference pulse is equal to the total dumping, i.e., dumping of reference pulse (15%) and dumping compared to reference pulse (0.15%), divided by the dumping of the reference pulse, i.e., 15%. Thus the optimized pulse is twice as efficient in dumping compared to the 500-fs delayed reference pulse. Compared to the dumping efficiency of an optimally timed, transform limited reference pulse, optimal control results in dump-pulse shapes whose dump efficiency is still (0.15 + 0.15)/0.22 ≈ 1.4 times larger.
  • 51
    • 35848967116 scopus 로고    scopus 로고
    • Care was taken to ensure the reproducibility of the critical features of the optimized pulses as discussed in this manuscript. The appearance of the pre- and postpulse structures with the characteristic spectral contents was observed in three independent experimental runs.
    • Care was taken to ensure the reproducibility of the critical features of the optimized pulses as discussed in this manuscript. The appearance of the pre- and postpulse structures with the characteristic spectral contents was observed in three independent experimental runs.
  • 55
    • 35848960468 scopus 로고    scopus 로고
    • Gaussian, Inc, Wallingford, CT
    • Frisch, M. J., et al. Gaussian 03, revision C.02; Gaussian, Inc.: Wallingford, CT, 2004.
    • (2004) Gaussian 03, revision , Issue.C.02
    • Frisch, M.J.1
  • 56
    • 35848940387 scopus 로고    scopus 로고
    • It should be noted that mode shifts upon photoexcitation of the dye are not taken into account in the pure ground-state calculations performed here. However, the position of the 202 cm-1 mode, which is excited by stimulated Raman scattering in the ground-state potential, will not be affected by this fact
    • -1 mode, which is excited by stimulated Raman scattering in the ground-state potential, will not be affected by this fact.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.