High-power amplified spontaneous emission pulses with tunable coherence for efficient non-linear processes

Valero, Nicolas; Marion, Denis; Lhermite, Jérôme; Delagnes, Jean-Christophe; Renard, W.; Royon, Romain; Cormier, Éric

doi:10.1038/s41598-021-83443-2

Cited by 16 publications

(10 citation statements)

References 35 publications

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“…These effects have already been successfully observed and applied in wavelength conversion [14,20] processes. Experimentally, fluorescence and ASE are two well known examples of incoherent, thermal-like radiations [12,21,22].…”

Section: Introductionmentioning

confidence: 89%

“…is difficult to derive analytically in the case of nonlinear filtering, but can be readily computed. The input I ASE (t) is simulated using the method described in [14] and recalled in Appendix A. The coherence time of the electric field was set to τ c = 25 fs and the time increment to 1 fs.…”

Section: Enhancement Factor For An Ideal N-photon Interaction Processmentioning

confidence: 99%

“…(factorial) relative enhance- * Electronic address: denis.marion@u-bordeaux.fr ment factor η n in an instantaneous n-photon process. Agarwal's result still holds for amplified spontaneous emission (ASE) [12], and for a large class of nonlinear phenomena, including multiphoton ionization [11,13], harmonic generation [14] and others.…”

Section: Introductionmentioning

confidence: 99%

“…This phenomenon results from the photon bunching occurring in random [14] or pseudo-random [15] laser sources. This bunching phenomenon is general to all thermal-like radiations [16], and sources with a more pronounced bunching effect are referred to as "superbunched" [17].…”

Section: Introductionmentioning

confidence: 99%

“…Super-and Anti-bunched sources can also be generated by using a cw-seeded frequency-shifted feedback cavity [24,25]. Among the available technologies, active components such as fiber-based Yb 3+ -doped materials make it possible to conceive broadband ASE sources, powerful enough to observe nonlinear effects [14] and to tackle higher-order ones (n > 2). As previously mentioned, the possibility to surpass the n-factorial enhancement of ASE involved in a n-photon process (η n = n!)…”

Section: Introductionmentioning

confidence: 99%

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Control of nonlinear processes using versatile random photonic sources: Application to the energy deposition in a dielectric material

2022

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We report on the properties of a non-conventional stochastic photonic source. We first describe the principle of nonlinear intensity filtering by using a modified Mach-Zehnder interferometer. The latter alters the characteristics of an input stochastic source based on Bose-Einstein emission. Computed output intensity fluctuations are compared to an analytical model. Adjusting the interferometer parameters, we show theoretically and numerically that the statistical properties of light such as its probability density function can be tailored. Depending on the parameters, the probability density may exhibit large overshoots or smoother fluctuations. We further evaluate the impact of these modified statistics on simple nonlinear processes. Compared to Bose-Einstein emitters, the yield of nonlinear phenomena varies by several orders of magnitude. We finally simulate the nonlinear interaction of such a laser source with a dielectric material (fused silica) within the framework of a more realistic model, including a statistical analysis. It confirms that the deposited energy varies over many decades and can be largely enhanced due to the properties of the presented laser source.

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Section: Introductionmentioning

confidence: 89%

Section: Enhancement Factor For An Ideal N-photon Interaction Processmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Control of nonlinear processes using versatile random photonic sources: Application to the energy deposition in a dielectric material

2022

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Modelocked Thermal Frequency Combs for Ultrashort Chaotic Quantum Optics

Wakui,

Tsujimoto,

Kishimoto

et al. 2024

Adv Quantum Tech

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Modelocked thermal frequency combs (MTCs) are generated by employing spectrally narrowed amplified spontaneous emission (ASE) seeded into an electro‐optic frequency comb generator. The MTC emits 2‐ps duration ultrashort pulses at a repetition rate of 10 GHz. Autocorrelation of the MTC pulses confirms a reduced coherence time, ps, aligning with the narrowed bandwidth of the ASE seed. Intensity correlations of optically gated MTC pulses at a repetition rate of 250 MHz reveal nearly ideal thermal photon statistics with an experimental , yielding an intrinsic after background noise removal. As a practical application, second harmonic generation (SHG) is performed utilizing the optically gated MTC pulses as a pump and experimental intensity correlations, , are examined for the SH photons. An entire transition in , continuously changing from six to two by increasing the pump strength, agrees with the single‐mode analytical model. Furthermore, time‐resolved pulse height correlations allow to simultaneously acquire power variations in SHG and third harmonic generation against the pump. With the maximum peak intensity, , realized in a periodically poled waveguide for SHG, the demonstration highlights the potential for various applications in chaotic quantum optics experiments that necessitate ultrashort, high‐intensity, single‐spatiotemporal‐mode thermal pulses.

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Fabrication and characterization of tapered photonic crystal fiber for broadband 2 µm: four-wave mixing-based fibered OPCPA

et al. 2023

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We present the simulation, fabrication, and characterization of large area microstructured fiber tapers which enables broadband phasematching conditions of the four wave-mixing process. These silica-based tapers are intended to serve as a nonlinear gain medium for intense and high average power Fiber Optical Parametric Chirped Pulse Amplifier emitting at 2 $$\upmu \hbox {m}$$ μ m and strongly pumped at Yb wavelength. Different geometries (tapered/untapered, aspect ratio, etc.) are fabricated, analyzed and their broadening properties—key for supporting ultrashort pulses amplification—are compared and discussed. The characterization of nonlinear gain bandwidth of the tapers relies on a tunable source of stochastic pulses based on tunable amplified spontaneous emission in Yb-doped amplifiers. The strong overshoots of this source allows degenerate four-wave mixing process to occur thus generating broadband incoherent visible signal and mid-infrared idler waves at much lower average power than usually needed with coherent pumping. The idler centered around 1.85 $$\mu$$ μ m is broadened due to zero-dispersion wavelength shift along the taper.

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High-power amplified spontaneous emission pulses with tunable coherence for efficient non-linear processes

Cited by 16 publications

References 35 publications

Control of nonlinear processes using versatile random photonic sources: Application to the energy deposition in a dielectric material

Control of nonlinear processes using versatile random photonic sources: Application to the energy deposition in a dielectric material

Modelocked Thermal Frequency Combs for Ultrashort Chaotic Quantum Optics

Fabrication and characterization of tapered photonic crystal fiber for broadband 2 µm: four-wave mixing-based fibered OPCPA

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