Ultra-Narrow-Linewidth Lasers for Quantum Applications

Lai, Yi Hsuan; Amili, Abdelkrim El; Eliyahu, Danny; Moss, Robert; Ganji, Setareh; Singer, Scott; Maleki, Lute

doi:10.1364/cleo_si.2022.stu5o.2

Cited by 3 publications

(3 citation statements)

References 13 publications

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“…As well as a reduction in quantum phase noise, ultra-narrow fundamental linewidths can also be reached, with sub-kHz linewidths having already been recently demonstrated within our research group [17,42,43], where identical AlGaInP-based VECSEL samples were utilized. While the degree of intensitydifference squeezing that can be achieved should be irrespective of the quantum phase noise and narrow linewidth operation of the OPO pump source, for a given low intensity noise, reducing these characteristics can still open up new possibilities and applications in e.g., atomic clocks [44], and quantum communication [45], cryptography [46], spectroscopy [47,48] and computing [49].…”

Section: Discussionmentioning

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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Section: Discussionmentioning

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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“…The main disadvantages are the uneven actuation response due to the presence of mechanical modes and the low stressoptic tuning efficiency (few tens of megahertz per volt) [229]. The response flatness can be improved by dampening the mechanical modes [94], and the stress-optic tuning efficiency can be improved by using ferroelectric leadzirconate-titanate [94,242,243] and employing geometry change [244]. For example, cited from Ref.…”

Section: Heterogeneous Integration Advances Laser Self-injection Lockingmentioning

confidence: 99%

Recent advances in laser self-injection locking to high-Q microresonators

et al. 2023

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The stabilization and manipulation of laser frequency by means of an external cavity are nearly ubiquitously used in fundamental research and laser applications. While most of the laser light transmits through the cavity, in the presence of some back-scattered light from the cavity to the laser, the self-injection locking effect can take place, which locks the laser emission frequency to the cavity mode of similar frequency. The self-injection locking leads to dramatic reduction of laser linewidth and noise. Using this approach, a common semiconductor laser locked to an ultrahigh-Q microresonator can obtain sub-Hertz linewidth, on par with state-of-the-art fiber lasers. Therefore it paves the way to manufacture high-performance semiconductor lasers with reduced footprint and cost. Moreover, with high laser power, the optical nonlinearity of the microresonator drastically changes the laser dynamics, offering routes for simultaneous pulse and frequency comb generation in the same microresonator. Particularly, integrated photonics technology, enabling components fabricated via semiconductor CMOS process, has brought increasing and extending interest to laser manufacturing using this method. In this article, we present a comprehensive tutorial on analytical and numerical methods of laser self-injection locking, as well a review of most recent theoretical and experimental achievements.

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“…ecently, ultra-narrow-band light sources have emerged as pivotal components in advancing optical communication [1][2][3], optical precision measurement [4][5][6][7][8], and signal synthesis [9], owing to their extended coherency length and minimal phase noise. The laser linewidth, a critical parameter for characterizing the coherence of a laser light source, has This paragraph of the first footnote will contain the date on which you submitted your paper for review.…”

Section: Introductionmentioning

confidence: 99%

Sub-100-Hz DFB Laser Injection-Locked to PM Fiber Ring Cavity

Panyaev,

Itrin,

Korobko

et al. 2024

J. Lightwave Technol.

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Low-noise lasers are invaluable tools in applications ranging from precision spectroscopy and displacement measurements to the development of advanced optical atomic clocks. Although all these applications benefit from reduced frequency noise, some also demand a low-cost and robust design. In this work, we introduce a novel and practical concept of a simple, single-frequency laser that utilizes a ring fiber cavity for self-injection locking of a standard semiconductor distributed feedback (DFB) laser. Contrary to previously reported solutions, our laser configuration is fully spliced from polarizationmaintaining (PM) single-mode optical fiber components. This results in an adjustment-and maintenance-free narrow-band laser operation with significantly enhanced stability against environmental noise. Importantly, continuous-wave (CW) singlefrequency laser operation is achieved through self-injection locking, while the low-bandwidth active optoelectronic feedback serves exclusively to maintain this regime. Operating with output powers of ~8 mW, the proposed fiber configuration narrows the natural Lorentzian linewidth of the emitted light to ~ 75 Hz and ensures phase and intensity noise levels of less than -120 dBc/Hz (> 10 kHz) and -140 dBc/Hz (> 30 kHz), respectively. Furthermore, the thermally stabilized laser exhibits a frequency drift of less than ~ 0.5 MHz/min with a maximal frequency walkoff of < 8 MHz. We believe that translating this laser design to integrated photonics in the near future could dramatically lower costs and reduce the footprint in various applications, including ultra-high-capacity fiber and data center networks, atomic clocks, and microwave photonics.

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Ultra-Narrow-Linewidth Lasers for Quantum Applications

Cited by 3 publications

References 13 publications

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

Recent advances in laser self-injection locking to high-Q microresonators

Sub-100-Hz DFB Laser Injection-Locked to PM Fiber Ring Cavity

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