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Kerry J. Vahala
California Institute of Technology
409Publications
57H-index
19.6kCitations
Publications 409
Newest
#1Lin ChangH-Index: 7
#2Weiqiang XieH-Index: 8
Last.John E. BowersH-Index: 85
view all 16 authors...
Recent advances in nonlinear optics have revolutionized the area of integrated photonics, providing on-chip solutions to a wide range of new applications. Currently, the state of the art integrated nonlinear photonic devices are mainly based on dielectric material platforms, such as Si3N4 and SiO2. While semiconductor materials hold much higher nonlinear coefficients and convenience in active integration, they suffered in the past from high waveguide losses that prevented the realization of high...
#1Yang He (UR: University of Rochester)H-Index: 4
#2Qi-Fan Yang (California Institute of Technology)H-Index: 13
Last.Qiang Lin (UR: University of Rochester)H-Index: 33
view all 10 authors...
The wide range of functions that are possible with lithium niobate (LN) waveguide devices, including phase and intensity modulation, second-harmonic generation, and difference-frequency generation, makes it attractive as a potential microcomb material. LN microcombs would combine essential comb self-referencing and control functions with the pulse generation process in a single microresonator device. Here, we demonstrate a soliton microcomb in a monolithic high-Q LN resonator. Direct frequency d...
#1Chengying Bao (California Institute of Technology)H-Index: 1
#2Myoung-Gyun Suh (California Institute of Technology)H-Index: 10
Last.Kerry J. Vahala (California Institute of Technology)H-Index: 57
view all 3 authors...
We demonstrate rapid imaging using dual-microcomb interferometry. One of the soliton microcombs is spatially dispersed into two dimensions to record spatial information and the image is read out by multi-heterodyne with the second microcomb. © 2019 The Author(s)
#1Kerry J. Vahala (California Institute of Technology)H-Index: 57
#2Yu-Hung Lai (California Institute of Technology)H-Index: 4
Last.Myoung-Gyun Suh (California Institute of Technology)H-Index: 10
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A chip-based gyroscope is demonstrated that uses counter-propagating Brillouin lasers to measure rotation as a Sagnac-induced frequency shift. Demonstration of rotation measurement below the Earth rotation rate is presented. Prospects for improved performance are discussed. © 2019 The Author(s)
#1Qi-Fan Yang (California Institute of Technology)H-Index: 13
#2Boqianz Shen (California Institute of Technology)
Last.Kerry J. Vahala (California Institute of Technology)H-Index: 57
view all 11 authors...
A spectrometer is demonstrated using self-locked counter-propagating soliton frequency combs in a high-Q silica microresonator. Fast tuning laser waveforms and molecular absorption features are measured with kiloHertz to MegaHertz resolution. © 2019 The Author(s)
#1Yang He (UR: University of Rochester)H-Index: 4
#2Oifan Yang (California Institute of Technology)
Last.Qiang Lin (UR: University of Rochester)H-Index: 33
view all 10 authors...
We report soliton generation in a high-Q lithium niobate resonator. The photo-refractive effect enables self-starting mode locking and is able to produce stable single solitons on demand that feature reversible switching between soliton states. © 2019 The Author(s)
#1Yu-Hung Lai (California Institute of Technology)H-Index: 4
#2Myoung-Gyun Suh (California Institute of Technology)H-Index: 10
Last.Kerry J. Vahala (California Institute of Technology)H-Index: 57
view all 9 authors...
We report a chip-based Brillouin laser gyroscope with 0.068° / h angular random walk and 3.6° /h bias stability. The device can resolve sinusoidal rotations with amplitude as low as 5° /h and is also used to measure the Earth's rotation. © 2019 The Author(s)
#1Kerry J. Vahala (California Institute of Technology)H-Index: 57
#2Xu Yi (California Institute of Technology)H-Index: 16
Last.Myoung-Gyun Suh (California Institute of Technology)H-Index: 10
view all 4 authors...
Microresonator solitons orbit around a closed waveguide path and produce a repetitive output pulse stream at a rate set by the roundtrip time. Here, counter-propagating solitons that simultaneously orbit in an opposing sense (clockwise/counter-clockwise) are studied. Despite sharing the same spatial mode family, their roundtrip times can be precisely and independently controlled. Furthermore, a state is possible in which their relative optical phase and repetition rates are locked. This state al...
#1Kerry J. Vahala (California Institute of Technology)H-Index: 57
#2Ki Youl Yang (California Institute of Technology)H-Index: 18
Last.Huolei Wang (California Institute of Technology)H-Index: 1
view all 8 authors...
A monolithic ultra-high-Q silica resonator featuring an integrated silicon-nitride waveguide is described. The resonator can be configured for either high-coherence Brillouin laser action or stable microwave-rate mode locking over C-band at low pumping power.
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