Phase-locking in cascaded stimulated Brillouin scattering

Büttner, Thiess; Poulton, Christopher G.; Steel, M. J.; Hudson, Darren D.; Eggleton, Benjamin J.

doi:10.1088/1367-2630/18/2/025003

Cited by 3 publications

(3 citation statements)

References 24 publications

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“…3c). We expect that such behaviour is analogous to that seen in other Brillouin [40] and Kerr frequency comb systems [41] in which cavity or pump tuning leads to the onset of phase-locking with subsequent comb The combined Raman and Brillouin output (black squares) had a slope efficiency of 50% and reached 79 W for 176 W input beam power. Red circles show the total output at all Brillouin Stokes and anti-Stokes frequencies, and blue triangles indicate the power output in the Raman modes.…”

supporting

confidence: 68%

“…3c contains anti-Stokes lines and a triangular profile consistent with Kerr FWM [43]. Kerr FWM generates equally-spaced comb lines that are resonant with the cavity, and is phasematched for co-propagating fields in the standing-wave configuration [40]. A Kerr-dominated generation mechanism is also consistent with the diminished role of cascaded Brillouin gain as a result of the frequency walk-off from cavity resonances (Fig.…”

mentioning

confidence: 58%

“…3c). The presence of anti-Stokes lines is indicative of four-wave-mixing (FWM), which potentially provides a mechanism for phase-locking and mode-locked pulse generation [40]. The comb width was found to be highly sensitive to mirror spacing, with sub-wavelength tuning leading to notable sharpening of each spectral component with reduced spectral power density between each comb line (Fig.…”

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confidence: 99%

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Diamond Brillouin Lasers

Williams¹,

Bai²,

Sarang³

et al. 2018

Preprint

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The coherent interaction between optical and acoustic waves via stimulated Brillouin scattering (SBS) is a fundamental tool for manipulating light at GHz frequencies. Its narrowband and noise-suppressing characteristics have recently enabled microwave-photonic functionality in integrated devices based on chalcogenide glasses, silica and silicon [1][2][3][4][5]. Diamond possesses much higher acoustic and bandgap frequencies and superior thermal properties, promising increased frequency, bandwidth and power; however, fabrication of low-loss optical and acoustic guidance structures [6] with the resonances matched to the Brillouin shift [1] is currently challenging. Here we use intense cavity-enhanced Raman generation to drive a diamond Brillouin laser without acoustic guidance. Our versatile configuration-the first demonstration of a freespace Brillouin laser-provides tens-of-watts of continuous Brillouin laser output on a 71 GHz Stokes shift with user switching between single Stokes and Brillouin frequency comb output. These results open the door to high-power, high-coherence lasers and Brillouin frequency combs, and are a major step towards on-chip diamond SBS devices.SBS interactions provide an important bridge between optical and microwave frequencies, enabling generation and signal processing capabilities with high resolution, broad bandwidth and wide tunability that far surpass capabilities of electronic components [2, 4, 7, 8]. The combination of a GHz frequency response and ultra-narrow linewidth (10s of MHz), both of which are widely tunable via the pump spectral properties [9], enables microwave processing functionality such as reconfigurable narrow-band filters, phase-shifters and time delays [7, 8,10,11]. SBS lasers also provide noise suppression via the acoustic field [12,13], and can be cascaded for ultra-low-noise lasers and frequency combs [1, 2, 14-17] in microwave synthesis [2] and spectroscopy [15]. The prospect of integrating these optical synthesis and processing capabilities onto a miniaturized format has stimulated a large effort in on-chip waveguide and resonator-based devices, predominantly in chalcogenide, silica and silicon [2, 5, 7, 9,18]. However, nonlinear absorption, thermal effects and a limited range of Brillouin frequencies (typically 5-20 GHz) in these materials [6,19,20] limit optical power handling and spectral control-both of which are key to device performance [2]-which has motivated a search for alternative and hybrid material platforms [3,[20][21][22]].Diamond's suite of exceptional optical and physical properties make it an outstanding candidate for extreme photonics applications in high-power lasers, quantum optics, bio-photonics and sensing [23][24][25]. Its high sound velocity and wide bandgap also increase the available Brillouin frequency range to , up to an order of magnitude higher than other SBS materials [19,22]. Continuous powers and power densities at hundreds of watts and 1 GW.cm −2 are routinely sustained without deleterious nonlinear effects [23,27,28] in cont...

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supporting

confidence: 68%

mentioning

confidence: 58%

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confidence: 99%

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Diamond Brillouin Lasers

Williams¹,

Bai²,

Sarang³

et al. 2018

Preprint

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Stimulated Brillouin scattering materials, experimental design and applications: A review

et al. 2018

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Light bullet generation via stimulated Brillouin scattering

Huang,

Guo,

Fan

2024

APL Photonics

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We propose an all-optical approach to generating space–time wave packets in a multimode slab waveguide via the multilevel interband stimulated Brillouin scattering process. Two pump sources and a single-mode signal are fed into the waveguide. The pumps generate a single-mode acoustic wave through the electrostrictive process. The acoustic wave then induces an indirect interband photonic transition from the signal wave, resulting in a light bullet, that is, a space–time wave packet that does not change its spatial and temporal shape as it propagates through the waveguide.

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Phase-locking in cascaded stimulated Brillouin scattering

Cited by 3 publications

References 24 publications

Diamond Brillouin Lasers

Diamond Brillouin Lasers

Stimulated Brillouin scattering materials, experimental design and applications: A review

Light bullet generation via stimulated Brillouin scattering

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