Optical parametric oscillation in a random polycrystalline medium: publisher’s note

Ru, Qitian; Lee, Nathaniel; Chen, Xuan; Zhong, Kai; Tsoy, Georgiy; Mirov, Mike; Vasilyev, Sergey; Mirov, Sergey; Vodopyanov, Konstantin L.

doi:10.1364/optica.4.000813

Cited by 2 publications

(3 citation statements)

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“…RQPM is costless and independent to material orientation and input laser polarization, thus it possesses an extremely large bandwidth. During the past few years, RQPM nonlinear interactions driven by femtosecond lasers have received increasing attention to get broadband coherent mid-infrared (MIR) laser sources [2][3][4][5][6]. The RQPM efficiency can be comparable to traditional PM and QPM methods [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

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Fourier Transform Analysis on Random Quasi-Phase-Matched Nonlinear Optical Interactions

et al. 2022

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The Fourier transform method is adopted to analyze random quasi-phase matched (RQPM) nonlinear frequency conversion problems in polycrystalline materials. By treating the material as random signals of effective nonlinear coefficient (deff) along the beam path, fast Fourier transform (FFT) operations directly produce the generated field amplitude versus spatial frequency mismatch (Δk/2π), which relates to all the possible RQPM nonlinear interactions. Thus, the RQPM bandwidth is intuitive from the wavelength-dependent results. More importantly, the Fourier transform treatment greatly decreases the computational amount by orders compared with the traditional step-by-step integration method. The quantitative simulation of RQPM difference frequency generation (DFG) with three variable wavelengths is realized for the first time.

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Section: Introductionmentioning

confidence: 99%

“…During the past few years, RQPM nonlinear interactions driven by femtosecond lasers have received increasing attention to get broadband coherent mid-infrared (MIR) laser sources [2][3][4][5][6]. The RQPM efficiency can be comparable to traditional PM and QPM methods [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Fourier Transform Analysis on Random Quasi-Phase-Matched Nonlinear Optical Interactions

et al. 2022

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“…Parametric oscillators are an important type of oscillator based on a nonlinear process. In particular, optical parametric oscillators (OPOs) greatly extend the operating frequency of lasers by utilizing second-order or third-order nonlinearity, while the operating frequency range of ordinary lasers is limited to the stimulated atomic energy level [6][7][8][9] . However, an OPO, especially the doubly resonant OPO (DRO) 10 , is difficult to operate because not only the phase-matching condition but also the mode condition for the signal and idler should be satisfied.…”

Section: Introductionmentioning

confidence: 99%

Optoelectronic parametric oscillator

et al. 2020

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Oscillators are one of the key elements in various applications as a signal source to generate periodic oscillations. Among them, an optical parametric oscillator (OPO) is a driven harmonic oscillator based on parametric frequency conversion in an optical cavity, which has been widely investigated as a coherent light source with an extremely wide wavelength tuning range. However, steady oscillation in an OPO is confined by the cavity delay, which leads to difficulty in frequency tuning, and the frequency tuning is discrete with the minimum tuning step determined by the cavity delay. Here, we propose and demonstrate a counterpart of an OPO in the optoelectronic domain, i.e., an optoelectronic parametric oscillator (OEPO) based on parametric frequency conversion in an optoelectronic cavity to generate microwave signals. Owing to the unique energy-transition process in the optoelectronic cavity, the phase evolution in the OEPO is not linear, leading to steady single-mode oscillation or multimode oscillation that is not bounded by the cavity delay. Furthermore, the multimode oscillation in the OEPO is stable and easy to realize owing to the phase control of the parametric frequency-conversion process in the optoelectronic cavity, while stable multimode oscillation is difficult to achieve in conventional oscillators such as an optoelectronic oscillator (OEO) or an OPO due to the mode-hopping and mode-competition effect. The proposed OEPO has great potential in applications such as microwave signal generation, oscillator-based computation, and radio-frequency phase-stable transfer.

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Optical parametric oscillation in a random polycrystalline medium: publisher’s note

Cited by 2 publications

References 1 publication

Fourier Transform Analysis on Random Quasi-Phase-Matched Nonlinear Optical Interactions

Fourier Transform Analysis on Random Quasi-Phase-Matched Nonlinear Optical Interactions

Optoelectronic parametric oscillator

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