Doppler-free two-photon absorption spectroscopy of vibronic excited states of naphthalene assisted by an optical frequency comb
Nishiyama, Akiko
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https://hdl.handle.net/2142/96836
Description
Title
Doppler-free two-photon absorption spectroscopy of vibronic excited states of naphthalene assisted by an optical frequency comb
Author(s)
Nishiyama, Akiko
Contributor(s)
Baba, Masaaki
Misono, Masatoshi
Nakashima, Kazuki
Issue Date
2017-06-22
Keyword(s)
Instrument/technique demonstration
Abstract
We observe Doppler-free two-photon absorption spectra of three bands of $S_1 leftarrow S_0$ transition of naphthalene. We use an optical frequency comb stabilized to a GPS clock as a frequency reference of a scanning cw laser. The use of the optical frequency comb enables us to decide transition frequencies of rovibronic lines and their linewidths with uncertainties of several tens of kHzfootnote{A. Nishiyama, K. Nakashima, A. Matsuba, M. Misono, J. Mol. Spectrosc. 318, 40 (2015).}. We discuss the interactions in vibronic excited states of naphthalene based on the dependences of frequency shifts and linewidths on vibrational and on rotational quantum numbers.
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