High-resolution spectroscopy of polyaromatic hydrocarbons with a single mode Ti:Sapphire laser disciplined by an optical frequency comb
Misono, Masatoshi
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https://hdl.handle.net/2142/104560
Description
Title
High-resolution spectroscopy of polyaromatic hydrocarbons with a single mode Ti:Sapphire laser disciplined by an optical frequency comb
Author(s)
Misono, Masatoshi
Contributor(s)
Baba, Masaaki
Kasahara, Shunji
Yamasaki, Sho
Issue Date
2019-06-17
Keyword(s)
Instrument/technique demonstration
Abstract
We have been studied the dynamics of polyaromatic hydrocarbons by high-resolution spectroscopy with a supersonic molecular beam. The target molecules are 9-methylanthracene, 1,2-benzanthracene, perylene, and so on.
For the rotationally-resolved spectra of these molecules, the determination of the frequency axis is a crucial issue [1].
In this study, we developed a frequency control system of a CW Ti:Sapphire laser disciplined by an Er-doped fiber optical frequency comb. The frequency of the Ti:Sapphire laser is scanned over several GHz with the uncertainty of about 15 kHz. Or the Ti:Sapphire laser frequency is fixed to an arbitrary single value for a long time interval. Now we try to observe high-resolution spectra of polyaromatic hydrocarbons with this system.
[1] A. Nishiyama, A. Matsuba, and M. Misono, Opt. Lett. 39, 4923 (2014).
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