Frequency comb generation by a continuous-wave-pumped optical parametric oscillator based on cascading quadratic nonlinearities

Ulvila, Ville; Phillips, Christopher; Halonen, Lauri; Vainio, Markku

doi:10.1364/ol.38.004281

Cited by 92 publications

(72 citation statements)

References 23 publications

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“…Operation of a Kerr comb in a pulsed regime with controlled formation of temporal solitons was recently demonstrated [9]. In contrast to these results achieved in a medium exhibiting a third-order non-linearity (Kerr effect), comb generation was also recently demonstrated by parametric processes with a second-order χ (2) non-linearity, with the potential for a lower pump threshold [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Quantum Cascade Laser Frequency Combs

Faist

Villares²,

Scalari³

et al. 2016

Nanophotonics

193

137

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It was recently demonstrated that broadband quantum cascade lasers can operate as frequency combs. As such, they operate under direct electrical pumping at both mid-infrared and THz frequencies, making them very attractive for dual-comb spectroscopy. Performance levels are continuously improving, with average powers over 100 mW and frequency coverage of 100 cm −1 in the midinfrared region. In the THz range, 10 mW of average power and 600 GHz of frequency coverage are reported. As a result of the very short upper state lifetime of the gain medium, the mode proliferation in these sources arises from four-wave mixing rather than saturable absorption. As a result, their optical output is characterized by the tendency of small intensity modulation of the output power, and the relative phases of the modes to be similar to the ones of a frequency modulated laser. Recent results include the proof of comb operation down to a metrological level, the observation of a Schawlow-Townes broadened linewidth, as well as the first dual-comb spectroscopy measurements. The capability of the structure to integrate monothically nonlinear optical elements as well as to operate as a detector shows great promise for future chip integration of dual-comb systems.

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Section: Introductionmentioning

confidence: 99%

Quantum Cascade Laser Frequency Combs

Faist

Villares²,

Scalari³

et al. 2016

Nanophotonics

193

137

View full text Add to dashboard Cite

show abstract

“…Incidentally, four-wave mixing has also been proposed as one of the mechanisms that lead to combs generation in quantum cascade lasers [6][7][8][9]. More recently, however, OFCs have also been demonstrated in continuously driven cavities with quadratic χ (2) nonlinearity [10][11][12][13]. In particular, OFCs can be generated in a cavity with a χ (2) nonlinear crystal that is phasematched for second harmonic generation (SHG) [12,13].…”

Section: Introductionmentioning

confidence: 99%

Frequency comb generation in continuously pumped optical parametric oscillator

Mosca

Parisi

Ricciardi

et al. 2017

Frontiers in Optics 2017

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Continuously pumped passive nonlinear cavities can be harnessed for the creation of novel optical frequency combs. While most research activities have focused on third-order 'Kerr' nonlinear interactions, recent studies have shown that frequency comb formation can also occur via secondorder nonlinear effects. Here, we extend the study of such quadratic combs to optical parametric oscillator (OPO) configurations, demonstrating that optical frequency combs can be generated in a continuously pumped OPO, in the parametric region around half of the pump frequency. We also numerically model the comb formation dynamics using a single time-domain mean field equation, and obtain simulation results that are in good agreement with experimentally observed spectra. Moreover, the analysis of the coherence properties of the simulated spectra shows the existence of correlated and phase-locked combs. Our work paves the way for a new class of frequency comb sources that could enable straightforward access to new spectral regions, such as the mid-infrared, and stimulate novel applications of frequency combs.

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“…Although all microresonator frequency comb studies to date have revolved around third-order Kerr nonlinear effects, recent studies in macroscopic, free-space cavities have shown that similar phenomenologies can also manifest themselves in quadratically nonlinear cavities [13], [14]. In particular, experiments have shown that, similarly as for Kerr cavities, a cw laser coupled into a quadratically nonlinear cavity can transform into a frequency comb [14].…”

Section: Introductionmentioning

confidence: 99%

Numerical modelling of frequency comb generation in nonlinear resonators

Erkintalo

Léo

Hansson

et al. 2016

2016 International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD)

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Abstract-We present a comprehensive review of recent work on numerical modelling of frequency comb generation in coherently-driven nonlinear resonators. Specifically, we discuss modelling and nonlinear dynamics of frequency combs generated in Kerr nonlinear microresonators, emphasizing links to similar dynamics studied in macroscopic fibre cavities. In addition to established Kerr frequency comb generators, we will also discuss emerging comb generation platforms based on continuouslydriven quadratically nonlinear resonators.

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Frequency comb generation by a continuous-wave-pumped optical parametric oscillator based on cascading quadratic nonlinearities

Cited by 92 publications

References 23 publications

Quantum Cascade Laser Frequency Combs

Quantum Cascade Laser Frequency Combs

Frequency comb generation in continuously pumped optical parametric oscillator

Numerical modelling of frequency comb generation in nonlinear resonators

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