30-Hz relative linewidth watt output power 165 µm continuous-wave singly resonant optical parametric oscillator

Ly, Aliou; Siour, Christophe; Bretenaker, Fabien

doi:10.1364/oe.25.009049

Cited by 10 publications

(6 citation statements)

References 25 publications

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“…However, the coherence of an optical frequency conversion process is fundamentally constrained by the pumping light source due to the very nature of the underlying energy conversion of photons in the optical parametric interaction. Consequently, a high coherence of converted light imposes a stringent requirement on the narrow linewidth of the pump laser and/or sophisticated frequency stabilization to reference cavities, [13,30,31] which significantly increases the system complexity. [12,13,[30][31][32][33][34] Here we demonstrate for the first time, to the best of our knowledge, a hybridly integrated laser that produces efficient and ultra-coherent near-visible light.…”

Section: Introductionmentioning

confidence: 99%

“…Consequently, a high coherence of converted light imposes a stringent requirement on the narrow linewidth of the pump laser and/or sophisticated frequency stabilization to reference cavities, [13,30,31] which significantly increases the system complexity. [12,13,[30][31][32][33][34] Here we demonstrate for the first time, to the best of our knowledge, a hybridly integrated laser that produces efficient and ultra-coherent near-visible light. The device combines second harmonic generation (SHG) in an LNOI microresonator that also functions to line narrow a distributed-feedback (DFB) pumping laser through self-injection-locking (SIL).…”

Section: Introductionmentioning

confidence: 99%

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Self‐Injection Locked Frequency Conversion Laser

Ling

Staffa

Wang

et al. 2023

Laser & Photonics Reviews

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High-coherence visible and near-visible laser sources are centrally important to the operation of advanced position/navigation/timing systems as well as classical/quantum sensing systems. However, the complexity and size of these bench-top lasers are an impediment to their transition beyond the laboratory. Here, a system-on-chip that emits high-coherence near-visible lightwaves is demonstrated. The devices rely upon a new approach wherein wavelength conversion and coherence increase by self-injection locking are combined within a single nonlinear resonator. This simplified approach is demonstrated in a hybridly-integrated device and provides a short-term linewidth of around 4.7 kHz (10 kHz before filtering). On-chip converted optical power over 2 mW is also obtained. Moreover, measurements show that heterogeneous integration can result in a conversion efficiency higher than 25% with an output power over 11 mW. Because the approach uses mature III-V pump lasers in combination with thin-film lithium niobate, it can be scaled for low-cost manufacturing of high-coherence visible emitters. Also, the coherence generation process can be transferred to other frequency conversion processes, including optical parametric oscillation, sum/difference frequency generation, and third-harmonic generation.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Self‐Injection Locked Frequency Conversion Laser

Ling

Staffa

Wang

et al. 2023

Laser & Photonics Reviews

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“…Frequency conversion based on nonlinear effects is a fundamental technique used to extend the frequency range of existing lasers [16][17][18][19][20]. To generate a longwavelength laser, an optical cavity is typically used to enhance either the pump or signal fields, which leads to the implementation of pump-enhanced DFG [18,19] and optical parametric oscillators (OPOs) [20][21][22][23][24][25][26], respectively. Recently, the tunable OPO with watt-level output and spanning 1.63-μm wavelengths have been reported [20][21][22], but no DFG schemes have been reported to date.…”

mentioning

confidence: 99%

“…To generate a longwavelength laser, an optical cavity is typically used to enhance either the pump or signal fields, which leads to the implementation of pump-enhanced DFG [18,19] and optical parametric oscillators (OPOs) [20][21][22][23][24][25][26], respectively. Recently, the tunable OPO with watt-level output and spanning 1.63-μm wavelengths have been reported [20][21][22], but no DFG schemes have been reported to date. In the DFG scheme, the signal beam is provided by external injection (instead of spontaneous generation in an OPO cavity), and thus the frequency of the generated beam is determined only by two external lasers that strictly satisfy the relation i p s     for energy conservation.…”

mentioning

confidence: 99%

Extra-cavity-enhanced difference-frequency generation at 1.63 µm

Yang¹,

Liu²,

Zhou³

et al. 2020

J. Opt. Soc. Am. B

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A 1632-nm laser has highly important applications in interfacing the wavelength of rubidium-based quantum memories (795 nm) and the telecom band (typically 1550 nm) by frequency conversion in three-wave mixing processes. A 1632-nm laser source based on pumpenhanced difference frequency generation is demonstrated. It has 300 mW of output power, in agreement with simulations, and a 55% quantum efficiency. An average power fluctuation of 0.51% over one hour was observed, and 200-kHz linewidth was measured using a delayed selfheterodyne method.A quantum internet with quantum computation, communication, and metrology could extend the capabilities of telecommunication networks [1]. It would have quantum nodes connected through quantum channels. Quantum nodes are various materials systems where quantum information is generated, processed, and stored. Photons are important information carriers for transferring quantum states between remote quantum nodes. However, long-distance optical communication requires photons with wavelengths that are in the low-loss C-band, while quantum nodes usually operate at different wavelengths. Therefore, a quantum interface is needed to bridge the wavelength gap [2].Frequency conversion was introduced to transfer qubit states from one frequency mode to another while the quantum properties are preserved [2,3]. The most promising and relatively efficient approach is three-wave mixing in periodically poled non-linear crystals using quasiphase-matching [4][5][6][7][8][9][10][11][12][13]. In particular, a cavity to enhance the pump field, [5,6] or a periodically poled crystal waveguide [7,8,13], offers conversion efficiencies close to unity with a pump power of a few hundred milliwatts. The present work demonstrates a 1632-nm laser source that can be used as a pump to convert photons between telecom wavelengths (typically 1550 nm) and the near infrared wavelengths (795 nm) of rubidium-based quantum memories [14,15]. The frequency up-conversion is based on sum-frequency generation (SFG) [5][6][7][8][9], and the corresponding down-conversion is based on difference-frequency generation (DFG) [10][11][12][13]. In addition, the long-wavelength pumping scheme can minimize background noise due to Raman scattering [8,11].A common method to generate lasers around 1632 nm is via semiconductor laser diodes. However, unamplified commercial 1632-nm laser diodes have low output powers around 50 mW. To obtain high power 1632nm laser, specially designed amplifiers must be used that are not readily available. Diode lasers also suffer from disadvantages such as multi-longitudinal modes and poor beam quality. In the Ref. [12], frequency down-conversion of 780-nm photons to 1522-nm photons was reported using a 1.6-μm extra-cavity diode laser as a pump. However, the quantum interface between 795 nm and telecom band has not been realized for lack of a

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“…Because they cover the important transparent window of the atmosphere and nearly all fundamental rovibrational absorption bands of molecules, mid-infrared lasers have been widely used in the areas of environmental monitoring, medical diagnosis and counter-measurement [1][2][3] . The optical parametric oscillator (OPO) is an effective method to obtain high-power, continuous-wave (CW) mid-infrared coherent lasers, and has been extensively investigated [4][5][6][7] . However, it usually has a high threshold, especially for CW pump sources.…”

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confidence: 99%

Highly efficient continuous-wave mid-infrared generation based on intracavity difference frequency mixing

Cheng

Wang

et al. 2019

High Pow Laser Sci Eng

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We report on a new scheme for efficient continuous-wave (CW) mid-infrared generation using difference frequency generation (DFG) inside a periodically poled lithium niobate (PPLN)-based optical parametric oscillator (OPO). The pump sources were two CW fiber lasers fixed at 1018 nm and 1080 nm. One worked as the assisted laser to build parametric oscillation and generate an oscillating signal beam while the other worked at low power ( ${\leqslant}3~\text{W}$ ) to induce DFG between it and the signal beam. The PPLN temperature was appropriately adjusted to enable OPO and DFG to synchronously meet phase-matching conditions. Finally, both low-power 1018 nm and 1080 nm pump beams were successfully converted to $3.1~\unicode[STIX]{x03BC}\text{m}$ and $3.7~\unicode[STIX]{x03BC}\text{m}$ idler beams, respectively. The conversion efficiencies of the 1018 nm and 1080 nm pumped DFG reached 20% and 15%, respectively, while their slope efficiencies reached 19.6% and 15%. All these data were comparable to the OPOs pumped by themselves and never realized before in traditional CW DFG schemes. The results reveal that high-efficiency frequency down-conversion can be achieved with a low-power near-infrared pump source.

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30-Hz relative linewidth watt output power 165 µm continuous-wave singly resonant optical parametric oscillator

Cited by 10 publications

References 25 publications

Self‐Injection Locked Frequency Conversion Laser

Self‐Injection Locked Frequency Conversion Laser

Extra-cavity-enhanced difference-frequency generation at 1.63 µm

Highly efficient continuous-wave mid-infrared generation based on intracavity difference frequency mixing

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