Reducing the phase noise in diode lasers

Celis, R. L. Rincon; Martinelli, M.

doi:10.1364/ol.44.003394

Cited by 4 publications

(2 citation statements)

References 13 publications

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“…In this context VECSELs [16], also known as semiconductor disk lasers (SDLs), have demonstrated great potential due to their spectral flexibility (from UV to IR), power scaling, high beam quality and brightness, and suitability for low noise single frequency operation [17,18]. The vertical format allows the quantum wells to be positioned with nm-scale accuracy with respect to the anti-nodes of the optical field (known as resonant periodic gain [19]), such that hole-burning is avoided and ring-cavity oscillation is not required for stable single frequency operation [20].…”

Section: Introductionmentioning

confidence: 99%

Sub-kHz-linewidth VECSELs for cold atom experiments

et al. 2020

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We report and characterize sub-kHz linewidth operation of an AlGaInP-based VECSEL system suitable for addressing the narrow cooling transition of neutral strontium atoms at 689 nm. When frequency-stabilized to a standard air-spaced Fabry-Perot cavity (finesse 1000) via the Pound-Drever-Hall (PDH) technique, it delivers output power >150 mW in a circularly-symmetric single transverse mode with low frequency and intensity noise. The optical field was reconstructed from the frequency noise error signal via autocorrelation and the Wiener-Khintchine theorem, leading to an estimated linewidth of (125 ± 2) Hz. Optical beat note measurements were performed against a commercial locked laser system and a second, almost identical, VECSEL system resulting in linewidths of 200 Hz and 160 Hz FWHM, respectively. To the best of our knowledge, this is the first demonstration of a VECSEL compatible with the narrowest of lines (few hundred Hz) used for cooling and trapping atoms and ions.

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Section: Introductionmentioning

confidence: 99%

Sub-kHz-linewidth VECSELs for cold atom experiments

et al. 2020

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“…Furthermore, their unique amalgamation of high single-mode output power, very low spontaneous emission factor -in comparison to edge-emitting semiconductor lasers, and very high-finesse cavities, permit the VECSEL technology to operate with Schawlow-Townes-Henry (STH) linewidths of the order of mHz [17]. Moreover, due to the vertical geometry of the semiconductor gain structure, where the quantum wells are positioned at the anti-nodes of the optical field standing wave for a process known as resonant periodic gain [18], spatial holeburning is avoided, thereby enabling stable, low-noise, single-frequency operation in a simple linear cavity arrangement, as opposed to a ring oscillator [19]. VECSELs also provide access to an open, high-finesse, external cavity architecture, with multi-watt-level intracavity powers, even when commercial diode lasers with limited brightness are used as the pump source.…”

Section: Introductionmentioning

confidence: 99%

Single-frequency optical parametric oscillator intracavity-pumped by a visible VECSEL for low-noise down-conversion to 1.55 µm

Anderson,

Moriya,

Caspani

et al. 2023

Preprint

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We report, to the best of our knowledge, the first optical parametric oscillator (OPO) pumped by a visible AlGaInP-based vertical-external-cavity surface-emitting laser (VECSEL). Tunable emission over 1155–1300 nm in the signal and 1474–1718 nm in the idler are observed by temperature adjustment of a 40 mm-long 5%-MgO:PPLN crystal intracavity-pumped at 690 nm. When optimized for low oscillation threshold, and by implementing resonant idler output-coupling (Toc = 1.7%), extracted output powers of 26.2 mW (signal) and 5.6 mW (idler; one-way) are measured, corresponding to a total down-conversion efficiency and extraction efficiency of 70.2% and 43%, respectively. Further, a total down-conversion efficiency of 72.1% is achieved in the absence of idler output-coupling. Of particular interest for high-precision applications, including quantum optics experiments and squeezed light generation, high stability and single-frequency operation are also demonstrated. We measure RMS stabilities of 0.4%, 1.8% and 2.3% for the VECSEL fundamental, signal and idler, with (resolution-limited) frequency linewidths of 2.5 MHz (VECSEL) and 7.5 MHz (signal and idler).

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Single-frequency optical parametric oscillator intracavity-pumped by a visible VECSEL for low-noise down-conversion to 1.55 µm

Anderson,

Moriya,

Caspani

et al. 2024

Opt. Express

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We report, to the best of our knowledge, the first optical parametric oscillator (OPO) pumped by a visible AlGaInP-based vertical-external-cavity surface-emitting laser (VECSEL). Tunable emission over 1155–1300 nm in the signal and 1474–1718 nm in the idler are observed by temperature adjustment of a 40 mm-long 5%-MgO:PPLN crystal intracavity-pumped at 690 nm. When optimized for low oscillation threshold, and by implementing resonant idler output-coupling (TOC = 1.7%), extracted output powers of 26.2 mW (signal) and 5.6 mW (idler; one-way) are measured, corresponding to a total down-conversion efficiency and extraction efficiency of 70.2% and 43%, respectively. Further, a total down-conversion efficiency of 72.1% is achieved in the absence of idler output-coupling. Of particular interest for high-precision applications, including quantum optics experiments and squeezed light generation, high stability and single-frequency operation are also demonstrated. We measure RMS stabilities of 0.4%, 1.8% and 2.3% for the VECSEL fundamental, signal and idler, with (resolution-limited) frequency linewidths of 2.5 MHz (VECSEL) and 7.5 MHz (signal and idler).

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Reducing the phase noise in diode lasers

Cited by 4 publications

References 13 publications

Sub-kHz-linewidth VECSELs for cold atom experiments

Sub-kHz-linewidth VECSELs for cold atom experiments

Single-frequency optical parametric oscillator intracavity-pumped by a visible VECSEL for low-noise down-conversion to 1.55 µm

Single-frequency optical parametric oscillator intracavity-pumped by a visible VECSEL for low-noise down-conversion to 1.55 µm

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