Investigation of picosecond relaxation processes in cresyl violet

Junye Liu; Shihua Huang; Weiping Qin; Jiaqi Yu

doi:10.1016/0030-4018(92)90106-2

Investigation of picosecond relaxation processes in cresyl violet

Junye Liu, Shihua Huang, Weiping Qin, Jiaqi Yu

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

Picosecond population relaxation time of cresyl violet in methanol was measured by phase-conjugation type time-delayed four- wave mixing using incoherent light (TDFWM-IL). The excited state population relaxation time T₁ is about 157 ps. Another important dynamical process, absorption recovery, was also studied by correlation technique of mode-locked picosecond coherent pulses with different intensities. The ground-state absorption recovery time T_ar is about 162 ps. These results were analysed theoretically using the appropriate models. It is shown that the excited-state population relaxation and the ground-state absorption recovery occurred on a comparable time scale. When τ₃₂→0 especially, the medium becomes a two-level system, and the absorption recovery time is identical to the population relaxation time.

Original language	English
Pages (from-to)	87-92
Number of pages	6
Journal	Optics Communications
Volume	91
Issue number	1-2
DOIs	https://doi.org/10.1016/0030-4018(92)90106-2
State	Published - 1 Jul 1992
Externally published	Yes

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@article{69ad23f66da94f6fbcdef59989b903d3,

title = "Investigation of picosecond relaxation processes in cresyl violet",

abstract = "Picosecond population relaxation time of cresyl violet in methanol was measured by phase-conjugation type time-delayed four- wave mixing using incoherent light (TDFWM-IL). The excited state population relaxation time T1 is about 157 ps. Another important dynamical process, absorption recovery, was also studied by correlation technique of mode-locked picosecond coherent pulses with different intensities. The ground-state absorption recovery time Tar is about 162 ps. These results were analysed theoretically using the appropriate models. It is shown that the excited-state population relaxation and the ground-state absorption recovery occurred on a comparable time scale. When τ32→0 especially, the medium becomes a two-level system, and the absorption recovery time is identical to the population relaxation time.",

author = "Junye Liu and Shihua Huang and Weiping Qin and Jiaqi Yu",

note = "Funding Information: This work is supported by the National Natural Science Foundation of China and Open Laboratory of Excited State Processes, Changchun Institute of Physics, Academia Slmca.",

year = "1992",

month = jul,

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doi = "10.1016/0030-4018(92)90106-2",

language = "English",

volume = "91",

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journal = "Optics Communications",

issn = "0030-4018",

publisher = "Elsevier B.V.",

number = "1-2",

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TY - JOUR

T1 - Investigation of picosecond relaxation processes in cresyl violet

AU - Liu, Junye

AU - Huang, Shihua

AU - Qin, Weiping

AU - Yu, Jiaqi

N1 - Funding Information: This work is supported by the National Natural Science Foundation of China and Open Laboratory of Excited State Processes, Changchun Institute of Physics, Academia Slmca.

PY - 1992/7/1

Y1 - 1992/7/1

N2 - Picosecond population relaxation time of cresyl violet in methanol was measured by phase-conjugation type time-delayed four- wave mixing using incoherent light (TDFWM-IL). The excited state population relaxation time T1 is about 157 ps. Another important dynamical process, absorption recovery, was also studied by correlation technique of mode-locked picosecond coherent pulses with different intensities. The ground-state absorption recovery time Tar is about 162 ps. These results were analysed theoretically using the appropriate models. It is shown that the excited-state population relaxation and the ground-state absorption recovery occurred on a comparable time scale. When τ32→0 especially, the medium becomes a two-level system, and the absorption recovery time is identical to the population relaxation time.

AB - Picosecond population relaxation time of cresyl violet in methanol was measured by phase-conjugation type time-delayed four- wave mixing using incoherent light (TDFWM-IL). The excited state population relaxation time T1 is about 157 ps. Another important dynamical process, absorption recovery, was also studied by correlation technique of mode-locked picosecond coherent pulses with different intensities. The ground-state absorption recovery time Tar is about 162 ps. These results were analysed theoretically using the appropriate models. It is shown that the excited-state population relaxation and the ground-state absorption recovery occurred on a comparable time scale. When τ32→0 especially, the medium becomes a two-level system, and the absorption recovery time is identical to the population relaxation time.

UR - https://www.scopus.com/pages/publications/6944230369

U2 - 10.1016/0030-4018(92)90106-2

DO - 10.1016/0030-4018(92)90106-2

M3 - Article

AN - SCOPUS:6944230369

SN - 0030-4018

VL - 91

SP - 87

EP - 92

JO - Optics Communications

JF - Optics Communications

IS - 1-2

ER -

Investigation of picosecond relaxation processes in cresyl violet

Abstract

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