Bi-Directional Mode-Locked Thulium Fiber Laser as a Single-Cavity Dual-Comb Source

We demonstrate the use of a bi-directional mode-locked thulium doped fiber ring laser as a single cavity free-running dual-comb source. We consider the effect of group-velocity dispersion on the repetition rate difference between the two combs and demonstrate a tunable repetition rate difference from 48–229 Hz. Dual-comb spectroscopy of atmospheric H<sub>2</sub>O near <inline-formula> <tex-math notation="LaTeX">$1.87~\mu \text{m}$ </tex-math></inline-formula> is performed over a 1.47-m air path in laboratory with a peak single-shot signal-to-noise ratio of 27.5.

[1]  E. R. Polovtseva,et al.  The HITRAN2012 molecular spectroscopic database , 2013 .

[2]  L. Nenadovic,et al.  Rapid and precise absolute distance measurements at long range , 2009 .

[3]  C W Oates,et al.  Absolute frequency measurements of the Hg+ and Ca optical clock transitions with a femtosecond laser. , 2001, Physical review letters.

[4]  T. Hänsch,et al.  Optical frequency metrology , 2002, Nature.

[5]  K. Vahala,et al.  Soliton microcomb range measurement , 2017, Science.

[6]  M. Sander,et al.  Dual comb generation from a mode-locked fiber laser with orthogonally polarized interlaced pulses. , 2017, Optics express.

[7]  Theodor W. Hänsch,et al.  Absolute Optical Frequency Measurement of the Cesium D 1 Line with a Mode-Locked Laser , 1999 .

[8]  S. Kelly,et al.  Characteristic sideband instability of periodically amplified average soliton , 1992 .

[9]  Gang Li,et al.  The HITRAN 2008 molecular spectroscopic database , 2005 .

[10]  I. Coddington,et al.  Coherent dual-comb spectroscopy at high signal-to-noise ratio , 2010 .

[11]  Hou-Ren Chen,et al.  Investigation of Graphene Dispersion From Kelly Sideband in Stable Mode-Locked Erbium-Doped Fiber Laser by Few-Layer Graphene Saturable Absorbers , 2015, Journal of Lightwave Technology.

[12]  B. Bernhardt,et al.  Mid-infrared dual-comb spectroscopy with 2.4 μm Cr2+:ZnSe femtosecond lasers , 2010 .

[13]  G. Agrawal.  Pulse propagation in fibers , 2013 .

[14]  E. A. Curtis,et al.  An Optical Clock Based on a Single Trapped 199Hg+ Ion , 2001, Science.

[15]  T. Hänsch,et al.  Adaptive real-time dual-comb spectroscopy , 2012, Nature Communications.

[16]  K. Goda,et al.  Bidirectional Kerr-lens mode-locked dual-comb ring laser , 2016, 2016 Conference on Lasers and Electro-Optics (CLEO).

[17]  Yan Li,et al.  Performance estimation of dual-comb spectroscopy in different frequency-control schemes. , 2016, Applied optics.

[18]  Masud Mansuripur,et al.  All-fiber bidirectional passively mode-locked ring laser. , 2008, Optics letters.

[19]  C. Sweeney,et al.  Frequency-comb-based remote sensing of greenhouse gases over kilometer air paths , 2014, 1406.3326.

[20]  U. Keller,et al.  Dual-comb spectroscopy of water vapor with a free-running semiconductor disk laser , 2017, Science.

[21]  Sho Okubo,et al.  Ultra-broadband dual-comb spectroscopy across 1.0–1.9 µm , 2015, 1507.08006.

[22]  Y. Chen,et al.  Dual-comb self-mode-locked monolithic Yb:KGW laser with orthogonal polarizations. , 2015, Optics express.

[23]  K. Vahala,et al.  Counter-propagating solitons in microresonators , 2017, Nature Photonics.

[24]  N. Peyghambarian,et al.  Real-time dual-comb spectroscopy with a free-running femtosecond fiber laser , 2016, 2016 Conference on Lasers and Electro-Optics (CLEO).

[25]  S. Schiller,et al.  Spectrometry with frequency combs. , 2002, Optics letters.

[26]  Zheng Zheng,et al.  Picometer-resolution dual-comb spectroscopy with a free-running fiber laser. , 2016, Optics express.

[27]  N. Newbury,et al.  Response dynamics of the frequency comb output from a femtosecond fiber laser. , 2005, Optics express.

[28]  K. Minoshima,et al.  High-accuracy measurement of 240-m distance in an optical tunnel by use of a compact femtosecond laser. , 2000, Applied optics.

[29]  Masud Mansuripur,et al.  Femtosecond laser pulse generation with a fiber taper embedded in carbon nanotube/polymer composite. , 2007, Optics letters.

[30]  J. Taylor,et al.  Source of spectral and temporal instability in soliton fiber lasers. , 1992, Optics letters.

[31]  Yu Wang,et al.  Bidirectional Mode-locked Soliton Fiber Laser in 2μm Using CNT Saturable Absorber , 2017 .

[32]  Ruoyu Liao,et al.  Dual-comb spectroscopy with a single free-running thulium-doped fiber laser. , 2018, Optics express.