Full stabilization and control of an integrated photonics optical frequency synthesizer

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

doi:10.1109/ipcon.2017.8116130

Cited by 3 publications

(6 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In addition to continous wave pumping schemes, pulsed pumping can be used. Although the generation of the Kerr soliton microcombs can occur at record low power [tens of milliwatts have been reported for octave spanning spectra (48)], the efficiency of the process is low because of the detuned nature of the pump during the DKS formation. Periodic pulsed pumping at a frequency similar to the cavities' inverse round-trip time can enhance this efficiency by approximately the ratio of the round-trip time to the pulse duration.…”

Section: Stably Accessing Dks In the Presence Of Thermal Nonlinearitymentioning

confidence: 99%

“…DKSs based on a dual-comb approach have been used to create an integrated optical frequency synthesizer that allows synthesizing an optical frequency from a radio-frequency reference (48).…”

Section: Optical Frequency Synthesizersmentioning

confidence: 99%

“…Likewise, soliton microcombs have been used in massively parallel communication (44), in pairs at both the transmitter and receiver side, for low-noise microwave generation (45) as well as for chip-scale dual-comb-based light detection and ranging (LIDAR) (46,47). Moreover, soliton microcombs have been used to realize an all integrated photonics-based chip-frequency synthesizer (48) and been used as a microphotonic astrocomb for exoplanet searches (49,50). Soliton microcombs exhibit surprisingly rich nonlinear dynamics and have led to the observation of a variety soliton dynamics effects, such as bright soliton formation, dark pulses, flat-topped "platicons" formation (51), soliton Cherenkov radiation (20), Raman self-frequency shift (52)(53)(54), Stokes soliton (55), and breather solitons (56)(57)(58)(59)(60).…”

mentioning

confidence: 99%

See 2 more Smart Citations

Dissipative Kerr solitons in optical microresonators

Kippenberg

Gaeta

Lipson

et al. 2018

Science

Self Cite

1,403

792

View full text Add to dashboard Cite

The development of compact, chip-scale optical frequency comb sources (microcombs) based on parametric frequency conversion in microresonators has seen applications in terabit optical coherent communications, atomic clocks, ultrafast distance measurements, dual-comb spectroscopy, and the calibration of astophysical spectrometers and have enabled the creation of photonic-chip integrated frequency synthesizers. Underlying these recent advances has been the observation of temporal dissipative Kerr solitons in microresonators, which represent self-enforcing, stationary, and localized solutions of a damped, driven, and detuned nonlinear Schrödinger equation, which was first introduced to describe spatial self-organization phenomena. The generation of dissipative Kerr solitons provide a mechanism by which coherent optical combs with bandwidth exceeding one octave can be synthesized and have given rise to a host of phenomena, such as the Stokes soliton, soliton crystals, soliton switching, or dispersive waves. Soliton microcombs are compact, are compatible with wafer-scale processing, operate at low power, can operate with gigahertz to terahertz line spacing, and can enable the implementation of frequency combs in remote and mobile environments outside the laboratory environment, on Earth, airborne, or in outer space.

show abstract

Section: Stably Accessing Dks In the Presence Of Thermal Nonlinearitymentioning

confidence: 99%

Section: Optical Frequency Synthesizersmentioning

confidence: 99%

mentioning

confidence: 99%

See 1 more Smart Citation

Dissipative Kerr solitons in optical microresonators

Kippenberg

Gaeta

Lipson

et al. 2018

Science

Self Cite

1,403

792

View full text Add to dashboard Cite

show abstract

“…Higher emission powers produce greater line narrowing as described by Eq. (1). The relatively broad pump linewidth is highly compressed in laser emission.…”

Section: Fig 1 Narrow Linewidth Cascaded-order Si3n4 Brillouin Lasementioning

confidence: 99%

“…In particular, we achieve gain broadening by harnessing unguided (essentially bulk) phonons to mediate energy transfer from the pump to cascaded laser orders. Equation (1) shows how these properties can enhance laser coherence (lower linewidth). A large mode volume (𝐿𝐴 ]^^~2 .07x10 -12 m 3 ) and broadened gain bandwidth, foster large intra- cavity photon number (𝑁 # ≫ 1) and lower the Brillouin amplification rate (𝜇 # ).…”

Section: Narrow Linewidth Cascaded-order Si3n4 Brillouin Laser (A) Ri...mentioning

confidence: 99%

Sub-hertz fundamental linewidth photonic integrated Brillouin laser

et al. 2018

View full text Add to dashboard Cite

Photonic systems and technologies traditionally relegated to table-top experiments are poised to make the leap from the laboratory to real-world applications through integration, leading to a dramatic decrease in size, weight, power, and cost 1 . In particular, photonic integrated ultra-narrow linewidth lasers are a critical component for applications including coherent communications 2 , metrology 3-5 , microwave photonics 6 , spectroscopy 7 , and optical synthesizers 1 . Stimulated Brillouin scattering (SBS) lasers, through their unique linewidth narrowing properties 8 , are an ideal candidate to create highly-coherent waveguide integrated sources. In particular, cascaded-order Brillouin lasers show promise for multi-line emission 14 , low-noise microwave generation 6 and other optical comb applications. To date, compact, very-low linewidth SBS lasers have been demonstrated using discrete, tapered-fiber coupled chip-scale silica 9,10 or CaF2 11 microresonators. Photonic integration of these lasers can dramatically improve their stability to environmental and mechanical disturbances, simplify their packaging, and lower cost through wafer-scale photonics foundry processes. While single-order silicon 12 and cascade-order chalcogenide 13 waveguide SBS lasers have been demonstrated, these lasers produce modest emission linewidths of 10-100 kHz and are not compatible with waferscale photonics foundry processes. Here, we report the first demonstration of a sub-Hz (~0.7 Hz) fundamental linewidth photonic-integrated Brillouin cascaded-order laser, representing a significant advancement in the state-of-the-art in integrated waveguide SBS lasers. This laser is comprised of a bus-ring resonator fabricated using an ultra-low loss (< 0.5 dB/m) Si3N4 waveguide platform. To achieve a sub-Hz linewidth, we leverage a high-Q, large mode volume, single polarization mode resonator that produces photon generated acoustic waves without phonon guiding. This approach greatly relaxes phase matching conditions between polarization modes and optical and acoustic modes. By using a theory for cascaded-order Brillouin laser dynamics 14 , we determine the fundamental emission linewidth of the first Stokes order by measuring the beat-note linewidth between and the relative powers of the first and third Stokes orders. Extension of these high performance lasers to the visible and near-IR wavebands is possible due to the low optical loss of silicon nitride waveguides from 405 nm to 2350 nm 15 , paving the way to photonic-integrated sub-Hz lasers for visible-light applications including atomic clocks and precision spectroscopy.

show abstract

Downsampling of optical frequency combs

Cole

Papp

2018

J. Opt. Soc. Am. B

Self Cite

View full text Add to dashboard Cite

We demonstrate repetition-rate downsampling of optical frequency combs by way of pulse gating. The reduced repetition rate enables increased pulse energy, facilitating efficient spectral broadening and f-2f interferometry. To explore the technique, we downsample a 250 MHz repetition-rate comb to 25 MHz and detect the carrier-envelope offset frequency of the downsampled pulse train. We investigate the effects of pulse gating on the noise properties of the pulse train and the limitations of the technique by characterizing the phase-noise spectrum of the downsampled comb and deliberately imposing timing jitter on the pulse gate. We show that, up to an expected reduction modulo the new repetition rate, downsampling neither shifts nor introduces noise to the carrierenvelope offset frequency of the comb above the level of several microhertz. Additionally, we discuss the effect of downsampling on the spectrum of intensity fluctuations of the optical pulse train. Finally, we discuss some practical considerations relevant for the application of the technique to frequency combs with repetition rates in the 10 GHz range and higher.

show abstract

Full stabilization and control of an integrated photonics optical frequency synthesizer

Cited by 3 publications

References 0 publications

Dissipative Kerr solitons in optical microresonators

Dissipative Kerr solitons in optical microresonators

Sub-hertz fundamental linewidth photonic integrated Brillouin laser

Downsampling of optical frequency combs

Contact Info

Product

Resources

About