Towards an Integrated-Photonics Optical-Frequency Synthesizer With &lt;1 Hz Residual Frequency Noise

Spencer, Daryl T.; Bluestone, Aaron; Bowers, John E.; Briles, Travis C.; Diddams, Scott A.; Drake, Tara E.; Ilic, Rob; Kippenberg, Tobias J.; Komljenović, Tin; Lee, Jun Young; Li, Qing; Newbury, Nathan R.; Norberg, Erik; Oh, Dong Yoon; Pfeiffer, Martin H. P.; Sinclair, Laura C.; Srinivasan, Kartik; Stone, Jack A.; Suh, Myoung-Gyun; Theogarajan, Luke; Vahala, Kerry J.; Volet, Nicolas; Westly, Daron; Yang, Ki Youl

doi:10.1364/ofc.2017.m2j.2

“…In contrast to early microcombs 6 , soliton microcombs eliminate instabilities, provide stable (low-phase-noise) mode locking and feature a highly reproducible spectral envelope. Many applications of these devices are being studied including chip-based optical frequency synthesis 8 , secondary time standards 9 and dual-comb spectroscopy [10][11][12] . Also, a range of operating wavelengths is opening up by use of several low-optical-loss dielectric materials for resonator fabrication.…”

Section: Introductionmentioning

confidence: 99%

Towards visible soliton microcomb generation

Lee

¹

,

Oh

²

,

Yang

³

et al. 2017

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Frequency combs have applications that extend from the ultra-violet into the mid-infrared bands. Microcombs, a miniature and often semiconductor-chip-based device, can potentially access most of these applications, but are currently more limited in spectral reach. Here, we demonstrate mode-locked silica microcombs with emission near the edge of the visible spectrum. By using both geometrical and mode-hybridization dispersion control, devices are engineered for soliton generation while also maintaining optical Q factors as high as 80 million. Electronics-bandwidth-compatible (20 GHz) soliton mode locking is achieved with low pumping powers (parametric oscillation threshold powers as low as 5.4 mW). These are the shortest wavelength soliton microcombs demonstrated to date and could be used in miniature optical clocks. The results should also extend to visible and potentially ultra-violet bands.

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“…A recent advancement in microcombs has been the realization of soliton mode-locking [14][15][16][17][18] , which provides phase-locked femtosecond pulses with GigaHertz to Ter-aHertz repetition rates. Soliton microcombs are being studied in several frequency comb applications, in-cluding optical frequency synthesis 19 , secondary time standards 20 , and dual comb spectroscopy [21][22][23] . In this work, we demonstrate time-of-flight distance measurement using a chip-based dual-soliton source.…”

mentioning

confidence: 99%

Soliton microcomb range measurement

Suh

¹

,

Vahala

²

2018

Science

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Laser-based range measurement systems are important in many application areas, including autonomous vehicles, robotics, manufacturing, formation flying of satellites, and basic science. Coherent laser ranging systems using dual-frequency combs provide an unprecedented combination of long range, high precision, and fast update rate. We report dual-comb distance measurement using chip-based soliton microcombs. A single pump laser was used to generate dual-frequency combs within a single microresonator as counterpropagating solitons. We demonstrated time-of-flight measurement with 200-nanometer precision at an averaging time of 500 milliseconds within a range ambiguity of 16 millimeters. Measurements at distances up to 25 meters with much lower precision were also performed. Our chip-based source is an important step toward miniature dual-comb laser ranging systems that are suitable for photonic integration.

show abstract

“…In contrast to early microcombs 6 , soliton microcombs eliminate instabilities, provide stable (low-phase-noise) mode locking, and feature a highly reproducible spectral envelope. Many applications of these devices are being studied, including chip-based optical frequency synthesis 8 , secondary time standards 9 , and dual-comb spectroscopy [10][11][12] . Also, a range of operating wavelengths is opening up by use of several low-optical-loss dielectric materials for resonator fabrication.…”

mentioning

confidence: 99%

Towards Visible Soliton Microcomb Generation

Lee

¹

,

Oh

²

,

Yang

³

et al. 2017

Nonlinear Optics

2

0

View full text Add to dashboard Cite

Frequency combs have applications that extend from the ultra-violet into the mid-infrared bands. Microcombs, a miniature and often semiconductor-chip-based device, can potentially access most of these applications, but are currently more limited in spectral reach. Here, we demonstrate mode-locked silica microcombs with emission near the edge of the visible spectrum. By using both geometrical and mode-hybridization dispersion control, devices are engineered for soliton generation while also maintaining optical Q factors as high as 80 million. Electronics-bandwidth-compatible (20 GHz) soliton mode locking is achieved with low pumping powers (parametric oscillation threshold powers as low as 5.4 mW). These are the shortest wavelength soliton microcombs demonstrated to date and could be used in miniature optical clocks. The results should also extend to visible and potentially ultra-violet bands.

show abstract

Towards an Integrated-Photonics Optical-Frequency Synthesizer With <1 Hz Residual Frequency Noise

Cited by 9 publications

References 5 publications

Towards visible soliton microcomb generation

Towards visible soliton microcomb generation

Soliton microcomb range measurement

Towards Visible Soliton Microcomb Generation

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