Two-photon excitation spectroscopy of 1,5–Diphenyl-1,3,5-hexatriene using phase modulation
(2019) In Journal of Physics Communications 3.- Abstract
- We have used two-photon Fourier transform spectroscopy to investigate the first singlet excited state (S1) of a prototypical polyene molecule 1,5—Diphenyl-1,3,5-hexatriene. As the S1 state in the polyenes is a one-photon forbidden transition, the structure of its vibrational levels cannot be studied using resonant linear excitation. Although this level is accessible with two-photon excitation, previous studies done by using wavelength tunable pulsed lasers did not have enough resolution to investigate the details of the vibrational levels. In Fourier transform spectroscopy, one uses a pair of laser beams to excite the sample. The measurements are done by varying the time delay between the pulses. The spectral resolution is given by the... (More)
- We have used two-photon Fourier transform spectroscopy to investigate the first singlet excited state (S1) of a prototypical polyene molecule 1,5—Diphenyl-1,3,5-hexatriene. As the S1 state in the polyenes is a one-photon forbidden transition, the structure of its vibrational levels cannot be studied using resonant linear excitation. Although this level is accessible with two-photon excitation, previous studies done by using wavelength tunable pulsed lasers did not have enough resolution to investigate the details of the vibrational levels. In Fourier transform spectroscopy, one uses a pair of laser beams to excite the sample. The measurements are done by varying the time delay between the pulses. The spectral resolution is given by the inverse of the maximum time delay rather than the spectral width of the pulses. We have used the method to investigate the vibrational levels of the S1 state. In our implementation, we have used phase modulation to carry out the measurements in the rotating frame, which requires less data points along the time delay thereby significantly reducing the measurement time. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/7f9ace62-7c20-48f0-bb1d-018105808bca
- author
- Kumar, Pushpendra LU and Karki, Khadga Jung LU
- organization
- publishing date
- 2019-03-06
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Journal of Physics Communications
- volume
- 3
- article number
- 035008
- pages
- 9 pages
- publisher
- IOP Publishing
- external identifiers
-
- scopus:85065816078
- ISSN
- 2399-6528
- DOI
- 10.1088/2399-6528/aafc0a
- language
- English
- LU publication?
- yes
- id
- 7f9ace62-7c20-48f0-bb1d-018105808bca
- date added to LUP
- 2019-05-28 10:36:29
- date last changed
- 2023-11-04 16:38:35
@article{7f9ace62-7c20-48f0-bb1d-018105808bca,
abstract = {{We have used two-photon Fourier transform spectroscopy to investigate the first singlet excited state (S1) of a prototypical polyene molecule 1,5—Diphenyl-1,3,5-hexatriene. As the S1 state in the polyenes is a one-photon forbidden transition, the structure of its vibrational levels cannot be studied using resonant linear excitation. Although this level is accessible with two-photon excitation, previous studies done by using wavelength tunable pulsed lasers did not have enough resolution to investigate the details of the vibrational levels. In Fourier transform spectroscopy, one uses a pair of laser beams to excite the sample. The measurements are done by varying the time delay between the pulses. The spectral resolution is given by the inverse of the maximum time delay rather than the spectral width of the pulses. We have used the method to investigate the vibrational levels of the S1 state. In our implementation, we have used phase modulation to carry out the measurements in the rotating frame, which requires less data points along the time delay thereby significantly reducing the measurement time.}},
author = {{Kumar, Pushpendra and Karki, Khadga Jung}},
issn = {{2399-6528}},
language = {{eng}},
month = {{03}},
publisher = {{IOP Publishing}},
series = {{Journal of Physics Communications}},
title = {{Two-photon excitation spectroscopy of 1,5–Diphenyl-1,3,5-hexatriene using phase modulation}},
url = {{http://dx.doi.org/10.1088/2399-6528/aafc0a}},
doi = {{10.1088/2399-6528/aafc0a}},
volume = {{3}},
year = {{2019}},
}