Coupling modulation for efficient wavelength conversion with the Stark-chirped rapid adiabatic passage

Wan, Ting; Wang, Tengfei; Zhou, Wenhui; Chen, Changshui

doi:10.1016/j.rinp.2020.103387

Cited by 8 publications

(4 citation statements)

References 30 publications

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“…. In this instance, the corresponding normalized eigenvectors can be described as [19]: . Thus, the adiabatic state 0 g can be further described as follows:…”

Section: Stproducesmentioning

confidence: 99%

“…The coupling between the target eigenstate and the other eigenstates is much smaller than the difference among them to keep the process in the state of adiabatic evolution. The adiabatic condition can be described as follows [19]: Phase reversal quasi-phase-matching (PRQPM) is used to modulate the second-order nonlinear coefficient (2)  in the optic crystals [20][21][22]. Pragati et al designed a series of structures in the optical crystal by mainly using two different quasi-phase-matching (QPM) grating structures in a hybrid planar-channel waveguide to achieve the two cascaded wavelength conversion process with STIRAP mechanism effects, and they realized the of two coupling coefficients in the construction of an adiabatic process in the action length [23].…”

Section: Stproducesmentioning

confidence: 99%

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Efficient cascaded wavelength conversion under two-peak modulated Stark-chirped rapid adiabatic passage via grating structures

Zhang

Wan

et al. 2021

Results in Physics

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“…. In this instance, the corresponding normalized eigenvectors can be described as [19]: . Thus, the adiabatic state 0 g can be further described as follows:…”

Section: Stproducesmentioning

confidence: 99%

Section: Stproducesmentioning

confidence: 99%

Efficient cascaded wavelength conversion under two-peak modulated Stark-chirped rapid adiabatic passage via grating structures

Zhang

Wan

et al. 2021

Results in Physics

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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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“…The technique is effectively analogous to Stark-Chirped Rapid-Adiabatic-Passage (SCRAP) between two levels. SCRAP was originally introduced as a method to transfer population between two [14,15] or three [16][17][18][19] atomic states, and then applied in other contexts such as wave mixing and frequency conversion [20][21][22][23]. Recently, SCRAP has been adapted to waveguide optics in combination with Supersymmetry (SUSY) [24] to pump excited modes using a pair of multimode optical waveguides.…”

Section: Introductionmentioning

confidence: 99%

Mode pumping in photonic lattices using a single tailored auxiliary waveguide

Viedma¹,

Mompart²,

Ahufinger³

2022

Preprint

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In this work, we propose a completely general method to pump the gapped topological modes of a lattice of optical waveguides by controlling the propagation constant of an auxiliary waveguide and its coupling to the main lattice. In this way, we can transform a single-waveguide excitation on the auxiliary waveguide into a specific mode of the lattice. We also demonstrate the possibility of transferring supermodes between two waveguide lattices using the same method. We illustrate the results by pumping and transferring the topological modes of Su-Schrieffer-Heeger lattices. For both scenarios, we show that purities above 99% can be achieved with parameter values within experimental reach. Additionally, we demonstrate how the technique can be used to pump the bulk modes of the lattice for low number of waveguides or enable mode conversion between waveguide lattices.

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Coupling modulation for efficient wavelength conversion with the Stark-chirped rapid adiabatic passage

Cited by 8 publications

References 30 publications

Efficient cascaded wavelength conversion under two-peak modulated Stark-chirped rapid adiabatic passage via grating structures

Efficient cascaded wavelength conversion under two-peak modulated Stark-chirped rapid adiabatic passage via grating structures

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

Mode pumping in photonic lattices using a single tailored auxiliary waveguide

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