Synthesis of white laser source based on nonlinear frequency conversion with stimulated Raman adiabatic passage

Li, Fujie; Zhang, Zhonghao; Wan, Ting; Zhang, Handa; Chen, Changshui

doi:10.1016/j.optcom.2021.127427

Cited by 7 publications

(4 citation statements)

References 31 publications

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“…This strategy involves meticulously poling nonlinear crystals to counteract phase mismatches among various harmonics 31 – 33 . By leveraging this technique, one can achieve a broad-spectrum effect, further enhanced through the application of adiabatic passage 34 – 37 . Under the weak coupling condition, i.e ., when is much smaller than , retaining the ±1 order Fourier components and neglecting other higher-order series allows Eq.…”

Section: Resultsmentioning

confidence: 99%

Robust temporal adiabatic passage with perfect frequency conversion between detuned acoustic cavities

Chen,

Peng,

Chen

et al. 2024

Nat Commun

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For classical waves, phase matching is vital for enabling efficient energy transfer in many scenarios, such as waveguide coupling and nonlinear optical frequency conversion. Here, we propose a temporal quasi-phase matching method and realize robust and complete acoustical energy transfer between arbitrarily detuned cavities. In a set of three cavities, A, B, and C, the time-varying coupling is established between adjacent elements. Analogy to the concept of stimulated Raman adiabatic passage, amplitudes of the two couplings are modulated as time-delayed Gaussian functions, and the couplings’ signs are periodically flipped to eliminate temporal phase mismatching. As a result, robust and complete acoustic energy transfer from A to C is achieved. The non-reciprocal frequency conversion properties of our design are demonstrated. Our research takes a pivotal step towards expanding wave steering through time-dependent modulations and is promising to extend the frequency conversion based on state evolution in various linear Hermitian systems to nonlinear and non-Hermitian regimes.

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Section: Resultsmentioning

confidence: 99%

Robust temporal adiabatic passage with perfect frequency conversion between detuned acoustic cavities

Chen,

Peng,

Chen

et al. 2024

Nat Commun

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“…Even though birefringent phase matching [24,39] may be possible for each of the two processes, it is very unlikely to be able to achieve it for both processes in a single configuration (propagation direction inside the crystal and/or temperature). The same is true for the standard QPM method [24] which entails splitting the crystal into small periodic segments with alternating inversion of the sign of the nonlinear coefficients d S and d D in (11), and thus also of the signs of Ω S and Ω D in (12). Usually the QPM method can address only a single nonlinear process, but a modification aimed at a simultaneous phase matching of both processes in cascade will be discussed below.…”

Section: Example For Engineered Lithium Niobatementioning

confidence: 98%

“…Such links are particularly strong with classical optics, which has served as inspiration for several quantum physics formulations. The study and exploitation of analogies between quantum and optical physics is indeed an intense field of research [2,3] with applications in various areas of photonics, including, among others, waveguide optics [4][5][6], polarization optics [7,8] and nonlinear optics [9][10][11][12]. Some of the latter are inspired by adiabatic techniques developed for quantum * Author to whom any correspondence should be addressed.…”

Section: Introductionmentioning

confidence: 99%

Non-Hermitian quantum-like cascaded nonlinear optical frequency conversion and splitting in dissipative media

Al-Mahmoud¹,

Coda²,

Rangelov³

et al. 2022

J. Phys. B: At. Mol. Opt. Phys.

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It is shown that cascaded nonlinear optical frequency conversion over an intermediate wavelength subjected to dissipation behaves similarly to population transfer via a decaying state in a three-state non-Hermitian quantum system. The intermediate dissipation leads to a ﬁxed phase relationship between the input signal wave and the wave at the target frequency, what ﬁnally stabilizes both waves preventing any spatial oscillation of their powers. The cascaded conversion acts as a stable wave splitter between the input and target waves, the latter being nearly immune to power fluctuations of the pumps. A case of a simultaneous cascade of the sum frequency generation (SFG) and the diﬀerence frequency generation (DFG) processes is discussed as an example and a possible implementation based on aperiodically engineered quasi-phase-matching in lithium niobate is proposed.

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“…Nonlinear optical frequency conversion can achieve broadband and efficient conversion of ultraviolet to mid-infrared lasers through three-wave mixing 3 [9][10][11] and cascaded 4 conversion processes, which makes it an important means to obtain new band laser sources. With the stimulated Raman adiabatic passage (STIRAP) technique and the Stark-chirped rapid adiabatic passage 5 technique in atomic systems are analogized to the field of nonlinear optical cascaded frequency conversion, the nonlinear optical cascaded frequency conversion model based on adiabatic technique has been proposed, which provides some new ideas for nonlinear optical cascaded frequency conversion processes [12][13][14][15][16][17][18][19][20]. Chen et al investigated the optical simulation of double rapid adiabatic passage (DRAP) technique in three transiently coupling waveguides with the propagation constant longitudinally varying detunings.…”

Section: Introductionmentioning

confidence: 99%

Generation of terahertz waves based on nonlinear frequency conversion with double rapid adiabatic passage technique

Jia,

Chen,

et al. 2023

J. Phys. D: Appl. Phys.

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In this paper, a nonlinear optical cascaded difference frequency generation model based on double rapid adiabatic passage technique is established, and a theoretical scheme for generating THz waves based on the above model is proposed. In this model, when the incident signal laser interacts with a pump laser, the signal laser can be completely converted into the output laser by special processing of the coupling wave equation and making reasonable assumptions. Numerical simulation results show that THz waves with a centre frequency of 260 GHz can be obtained. The maximum quantum conversion efficiency of the signal laser to THz waves is about 43.4%. Under the premise of keeping the wavelength of the pump laser unchanged, the tunable THz waves of 0.26–2.94 THz can be obtained when tuning the wavelength of the signal laser to change in the range of 1.054–1.064 μm. Compared with the scheme using stimulated Raman adiabatic passage technique, the scheme can still generate terahertz waves during the application of a pump laser to two simultaneous difference frequency generation processes, and the intensity of the pump laser can be reduced from Gigawatt level to Megawatt level. This scheme is robust to the temperature variation and provides a new method for generating terahertz wave band for high-speed wireless transmission.

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Synthesis of white laser source based on nonlinear frequency conversion with stimulated Raman adiabatic passage

Cited by 7 publications

References 31 publications

Robust temporal adiabatic passage with perfect frequency conversion between detuned acoustic cavities

Robust temporal adiabatic passage with perfect frequency conversion between detuned acoustic cavities

Non-Hermitian quantum-like cascaded nonlinear optical frequency conversion and splitting in dissipative media

Generation of terahertz waves based on nonlinear frequency conversion with double rapid adiabatic passage technique

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