Journal
LASER & PHOTONICS REVIEWS
Volume 16, Issue 11, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/lpor.202200453
Keywords
frequency combs; mid-infrared; optical parametric oscillator; quadratic solitons
Categories
Funding
- Air Force Office of Scientific Research (AFOSR) [FA9550-20-1-0040]
- National Science Foundation (NSF) [1846273]
- National Aeronautics and Space Administration (NASA)/Jet Propulsion Laboratory (JPL)
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This paper reports a method to generate high power and high efficiency optical frequency combs in the mid-infrared spectral region. By utilizing an optical parametric oscillator operating in the simulton regime to form purely quadratic solitons, superior performance compared to previous demonstrations and other sources is achieved.
Powerful and efficient optical frequency combs in the mid-infrared (MIR) spectral region are highly desirable for a broad range of applications. Despite extensive efforts utilizing various techniques, MIR frequency comb sources are still lacking power, efficiency, or bandwidth for many applications. Here, the generation of an intrinsically locked frequency comb source centered at 4.18 mu m from an optical parametric oscillator (OPO) operating in the simulton regime is reported, in which formation of purely quadratic solitons leads to enhanced performance. Advantages of operation in the simulton regime in direct experimental comparisons to the conventional regime are shown, which are also supported by simulation and theory. 565 mW of average power, 900 nm of instantaneous 3 dB bandwidth, 350% slope efficiency, and 44% conversion efficiency are achieved, a performance that is superior to previous OPO demonstrations and other sources in this wavelength range. Here, a new avenue toward MIR frequency comb generation with high power and efficiency is opened, and the great potential of soliton generation based on quadratic nonlinearity in the MIR spectral region is suggested.
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