Doppler-free dual-comb spectroscopy of Rb using optical-optical double resonance technique

作者：Nishiyama Akiko; Yoshida Satoru; Nakajima Yoshiaki; Sasada Hiroyuki; Nakagawa Ken' ichi; Onae Atsushi; Minoshima Kaoru

来源：Optics Express, 2016, 24(22): 25894-25904.

DOI：10.1364/OE.24.025894

We present a Doppler-free high-resolution dual-comb spectroscopy technique in which a dual-comb system is employed to perform optical-optical double-resonance (OODR) spectroscopy. In our experimental study, Doppler-free high-resolution and highfrequency-accuracy broadband measurements were realized using the proposed OODR dual-comb spectroscopic technique, which does not require high-power-per-mode frequency combs. We observed fully resolved hyperfine spectra of 5P(3/2) - 4D(5/2), 4D(3/2) transitions of Rb at 1530 nm and precisely determined the absolute frequencies of the transitions, with an uncertainty of less than 1 MHz. The variations of the OODR spectral line shapes due to power broadening and alignment and the effects of polarization on the dual-comb OODR spectra were also analyzed. This study provides a widely applicable technique for Doppler-free dual-comb spectroscopy of various gaseous species.

• 出版日期2016-10-31