High power frequency comb delivered by a Tm-doped fiber laser

Evgeny Shestaev; Christian Gaida; Tobias Heuermann; Martin Gebhardt; Thomas P. Butler; Daniel Gerz; Nikolai Lilienfein; Phillipp Sulzer; Marc Fischer; Ronald Holzwarth; Alfred Leitenstorfer; Ioachim Pupeza; Jens Limpert

doi:10.1117/12.2510529

7 March 2019 High power frequency comb delivered by a Tm-doped fiber laser

Evgeny Shestaev, Christian Gaida, Tobias Heuermann, Martin Gebhardt, Thomas P. Butler, Daniel Gerz, Nikolai Lilienfein, Phillipp Sulzer, Marc Fischer, Ronald Holzwarth, Alfred Leitenstorfer, Ioachim Pupeza, Jens Limpert

Author Affiliations +

Proceedings Volume 10897, Fiber Lasers XVI: Technology and Systems; 108970I (2019) https://doi.org/10.1117/12.2510529
Event: SPIE LASE, 2019, San Francisco, California, United States

Abstract

Frequency combs are an enabling technology for metrology and spectroscopic applications in fundamental and life sciences. While frequency combs in the 1 μm regime, produced from Yb-based systems have already exceeded the 100 W – level, high power coverage of the interesting mid-infrared wavelength range remains yet to be demonstrated. Tm- and Ho-doped laser systems have recently shown operation at high average power levels in the 2 μm wavelength regime. However, frequency combs in this wavelength range have not exceeded the 5 W-average power level. In this work, we present a high power frequency comb, delivered by a Tm-doped chirped-pulse amplifier with subsequent nonlinear pulse compression. With an integrated phase noise of <320 mrad, low relative intensity noise of <0.5% and an average power of 60 W at 100 MHz repetition rate (and <30 fs FWHM pulse duration), this system demonstrates high stability and broad spectral coverage at an unrivalled average power level in this wavelength regime. Therefore, this laser will enable metrology and spectroscopy with unprecedented sensitivity and acquisition time. It is our ongoing effort to extend the spectral coverage of this system through the utilization of parametric frequency conversion into the mid-IR, thus ultimately enabling high power fingerprint spectroscopy in the entire molecular fingerprint region (2 – 20 μm).

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Evgeny Shestaev, Christian Gaida, Tobias Heuermann, Martin Gebhardt, Thomas P. Butler, Daniel Gerz, Nikolai Lilienfein, Phillipp Sulzer, Marc Fischer, Ronald Holzwarth, Alfred Leitenstorfer, Ioachim Pupeza, and Jens Limpert "High power frequency comb delivered by a Tm-doped fiber laser", Proc. SPIE 10897, Fiber Lasers XVI: Technology and Systems, 108970I (7 March 2019); https://doi.org/10.1117/12.2510529

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KEYWORDS

Frequency combs

Interferometers

Fiber lasers

Feedback signals

Laser systems engineering

Mid-IR

Fluctuations and noise

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