Quantum Induced Coherence Light Detection and Ranging

Qian, Gewei; Xu, Xingqi; Zhu, Shun-An; Xu, Chenran; Gao, Fei; Yakovlev, Vladislav V.; Liu, Xu; Zhu, Shi‐Yao; Wang, Da-Wei

doi:10.1103/physrevlett.131.033603

Cited by 9 publications

(4 citation statements)

References 61 publications

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“…where ω −1 is the angular frequency of the light wave; χ (3) denotes the third-order nonlinear polarizability; T 2 means the phonon lifetime; γ v refers to the dispersion response of nonlinear polarization intensity; n indicates the refractive index; A signifies the amplitude of the electric field; c presents the speed of light in a vacuum; and ω v is the angular frequency of phonon vibration. When X =ω 0 χ (3) T 2 γ v /4n 2 c 2 ω v , according to the light intensity expression I i = 0.5nE 0 cA 2 , Equation (2) can be expressed as follows:…”

Section: Theoretical Analysismentioning

confidence: 99%

“…High-energy short-pulse laser generation has been a current research hotspot due to its unique characteristics of short pulse duration and high peak power, which have good application prospects in fields including laser processing [1,2], laser ranging [3,4] and laser ignition [5,6]. At present, there are several methods for obtaining short-pulse lasers, such as Q-switched technology [7,8] and mode-locked technology [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

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Pulse Duration Compression by Two-Stage Stimulated Brillouin Scattering and Stimulated Raman Scattering

Han,

Liu,

et al. 2024

Photonics

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A pulse duration compression technique that combines stimulated Brillouin scattering (SBS) and stimulated Raman scattering (SRS) was presented in this study, achieving an output pulse duration of 48.3 ps. The feasibility of this approach has been experimentally demonstrated. To be specific, a pulse duration of 7.4 ns is compressed to 48.3 ps with an energy of 5.27 mJ, and the energy efficiency of the SRS pulse duration compression system is up to 21.84%. Moreover, this study provides a practical method for reliably generating high-energy short pulses.

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Section: Theoretical Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Pulse Duration Compression by Two-Stage Stimulated Brillouin Scattering and Stimulated Raman Scattering

Han,

Liu,

et al. 2024

Photonics

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show abstract

“…While these methods are simple and readily available, they often suffer from several limitations, such as high labor intensity, the potential for human error, susceptibility to external interference, and limited measurement efficiency. Consequently, researchers have shifted their focus toward indirect ranging methods, such as millimeter wave (mmWave) ranging, , radar ranging, , and ultrasound ranging, , which offer improved accuracy and measurement versatility. mmWave ranging utilizes electromagnetic waves in the millimeter wave frequency range to measure distances.…”

Section: Introductionmentioning

confidence: 99%

Visualized NIR Obstacle Ranging Based on Upconversion Nanoparticles

Wen,

Zhang,

et al. 2024

ACS Appl. Opt. Mater.

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Laser ranging utilizes laser beams to accurately measure distances with high precision, enabling applications in various fields. However, traditional laser ranging based on visible light faces limitations in penetrating obstacles and ranging target objects. In this study, we propose a refreshing obstacle ranging method that combines the high-penetration capabilities of 980 nm near-infrared (NIR) lasers with the color-variable properties of NaYF4:Yb3+,Er3+@NaYF4 upconversion nanoparticles (UCNPs). By adjusting the power density of the 980 nm NIR laser, the upconversion luminescence (UCL) color of the UCNPs can be modulated from green to red, which is attributed to the varied cross-relaxation (CR) and back energy transfer (BET) processes. Additionally, by varying the distance between the 980 nm NIR laser and the UCNPs, the emission colors of the UCL undergo a gradual modulation from red to green within the range of 0–30 cm. This breakthrough enables laser-assisted visual ranging by allowing laser beams to penetrate obstacles, including liquids with low light transmittance and solid materials with low transparency. This innovative approach opens up potential possibilities for the application of light-emitting materials in the field of laser obstacle ranging.

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“…In particular, parametric frequency conversions based on χ (2) optical processes such as second‐harmonic generation (SHG), sum‐frequency generation (SFG), and difference frequency generation (DFG) are essential for numerous photonics techniques, including tunable coherent radiation, [ 1 ] frequency metrology, [ 2–4 ] optical signal processing, [ 5,6 ] optical microscopy, [ 7,8 ] quantum information processing, [ 9,10 ] and quantum metrology. [ 11–13 ] The demonstration of efficient χ (2) optical processes on chip has attracted tremendous interest as it holds great promise to enrich the functionality of photonic integrated circuits (PICs) with low power consumption. So far, chip‐scale second‐order nonlinearity has been developed on various material platforms, including lithium niobate (LN) [ 14–24 ] and some III‐V materials [ 25–28 ] with intrinsically possess χ (2) nonlinearity, and silicon [ 29,30 ] and silicon nitride [ 31–33 ] with externally induced χ (2) nonlinearity.…”

Section: Introductionmentioning

confidence: 99%

Efficient Parametric Frequency Conversions in Chalcogenide‐Loaded Etchless Thin‐Film Lithium Niobate Waveguides

Song,

Peng,

Guo

et al. 2024

Laser & Photonics Reviews

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Parametric frequency conversion based on second‐order nonlinearity (χ(2)) is critical in many applications. The implementation of second‐order nonlinearity on integrated photonic platforms, in particular on the lithium niobate‐on‐insulator platform, has attracted considerable interest due to its low power consumption and small footprint. However, high‐efficiency on‐chip parametric frequency conversion remains challenging due to fabrication complexity. Here, efficient parametric frequency conversions via modal phase matching (MPM) in etchless thin‐film lithium niobate (TFLN)‐chalcogenide glass (ChG) hybrid waveguides fabricated by a simplified process free from domain engineering and etching of TFLN are proposed and demonstrated. An overall conversion efficiency of 25.55% W−1 for second‐harmonic generation is experimentally achieved in a 1‐cm‐long waveguide, significantly over the reach of the etchless counterparts and in the same order of magnitude as those of the etched cases based on MPM. Broadband frequency conversion with a 3‐dB bandwidth of 57 nm is achieved based on cascaded second‐harmonic generation and difference‐frequency generation via MPM in a nanophotonic waveguide using a continuous‐wave pump. This device shows great promise for efficient on‐chip parametric frequency conversion, enabling a wide range of photonic applications, and paving the way for further integration with various advanced ChG photonic devices toward on‐chip multifunctional microsystems.

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Quantum Induced Coherence Light Detection and Ranging

Cited by 9 publications

References 61 publications

Pulse Duration Compression by Two-Stage Stimulated Brillouin Scattering and Stimulated Raman Scattering

Pulse Duration Compression by Two-Stage Stimulated Brillouin Scattering and Stimulated Raman Scattering

Visualized NIR Obstacle Ranging Based on Upconversion Nanoparticles

Efficient Parametric Frequency Conversions in Chalcogenide‐Loaded Etchless Thin‐Film Lithium Niobate Waveguides

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