The 79th JSAP Autumn Meeting, 2018

Presentation information

Oral presentation

3 Optics and Photonics » 3.6 Ultrashort-pulse and high-intensity lasers

[20a-211A-1~10] 3.6 Ultrashort-pulse and high-intensity lasers

Thu. Sep 20, 2018 9:15 AM - 12:00 PM 211A (211-1)

Hajime Inaba(AIST)

9:30 AM - 9:45 AM

[20a-211A-2] Evaluation of carrier envelope offset frequency in a bidirectional dual-comb fiber laser

〇(M1)Yuya Hata1,2, Yoshiaki Nakajima1,2, Kaoru Minoshima1,2 (1.Univ. of Electro-Communications, 2.JST, ERATO MINOSHIMA Intelligent Optical Synthesizer)

Keywords:optical frequency comb, dual-wavelength mode-locked laser, development of light source

We are developing an innovative dual-comb fiber laser by combining the two semiconductor saturable absorber mirrors (SESAMs) and nonlinear polarization rotation (NPR). In the presentation, we will introduce our bidirectional mode-locked Er-fiber laser and its evaluation of carrier envelope offset frequency.
As a result of the experiment, two outputs from the laser cavity directly show broad spectra with a full-width-at-half-maximum (FWHM) bandwidth of ≈ 50 nm. Moreover, we could successfully generate ultra-broadband OFC by nonlinear spectral broadening and detect the high signal-to-noise-ratio (S/N) fceo beat signals in both directions.To the best of our knowledge, this is the first demonstration of fceo detection with self-referencing scheme for a dual-comb fiber laser. In addition, we found that these bi-directional fceo beat signals are mutually coherent even in the non-servo system, it is expected a realization of simple dual comb spectroscopy.