Globally Stable Microresonator Turing Pattern Formation for Coherent High-Power THz Radiation On-Chip

Huang, Shu‐Wei; Yang, Jinghui; Yang, Seungmi; Yu, Mingbin; Kwong, Dim‐Lee; Zelevinsky, Tanya; Jarrahi, Mona; Wong, Chee Wei

doi:10.1103/physrevx.7.041002

Cited by 68 publications

(41 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…S7c, left). This is done in numerical simulations by synchronously changing the frequency detuning of cavity 1 and cavity 2 with respect to the pump   12 , ff  from   12.73 GHz μs . The pump power is 500 mW.…”

Section: Numerical Simulation Of Mutually Coupled Optical Microresonamentioning

confidence: 99%

See 1 more Smart Citation

Super-efficient temporal solitons in mutually coupled optical cavities

2019

View full text Add to dashboard Cite

A coherently driven Kerr optical cavity is able to convert a continuous-wave laser to a sequence of ultrashort soliton pulses, enabling the generation of broadband and mode-locked frequency combs. Kerr cavity solitons are balanced through an energy exchange with the driving pump field. Improving the energy conversion efficiency from the pump to the soliton is of great significance for practical applications, but remains an outstanding challenge due to a limited temporal overlap between the soliton and the pump. Here, we report the discovery of temporal Kerr solitons in mutually coupled cavities instead of a traditional single cavity. We propose a strategy for breaking the limitation of pump-to-soliton energy conversion, and connect the underlying mechanism to impedance matching in radiofrequency electronic circuits. With macro optical fiber ring cavities which share the same physical model as miniature optical microresonators, we demonstrate nearly one-order improvement of the efficiency. Our findings pave the way towards super-efficient soliton microcombs based on optical microresonators with ultra-high quality factors. Dissipative solitons are localized particle-like structures which are double balanced by gain and loss, and nonlinearity and dispersion (or diffraction) [1], [2]. The study of dissipative solitons spreads in a large variety of different areas, has led to many exciting scientific findings and useful applications. Dissipative temporal solitons in coherently driven Kerr optical cavities have attracted great interest in recent years. The study arose in two different scenarios. One focused in the time domain, i.e., exciting and maintaining solitons to form optical buffers [3]; the other focused in the frequency domain, i.e., optical frequency comb generation with miniature microresonators [4]. The experimental demonstration of temporal cavity solitons was first performed in macro fiber ring cavities [3], and then repeated in optical microresonators [5], [6]. The researches from frequency and time domains then merged to a clear subject of cavity solitons [7], [8]. The discovery of microresonator solitons truly brings cavity solitons to a hot active research area because it enables integrated coherent frequency comb sources which may revolutionize many applications [9]- [17].Following the historical trend, the researches of cavity solitons nowadays have been performed on mainly two platforms. One is macro fiber ring cavities [3], [18]- [21]; the other is miniature optical microcavities [5], [8], [22]-[26]. In comparison, fiber cavities are more convenient for precise frequency detuning control and can be easily investigated in real time due to their much slower time scale; microresonators are particularly useful as compact frequency comb generators for practical applications. Previous studies have shown that both platforms share the similar physical model and useful technical hints may be learned from each other.

show abstract

Section: Numerical Simulation Of Mutually Coupled Optical Microresonamentioning

confidence: 99%

“…S7c, right). This corresponds to increasing the detuning between cavity 1 and the pump ( 1 f  ) from 1.273 GHz to 4.775 GHz at a speed of 12.73 GHz μs . The soliton is compressed and the peak power increases in this process.…”

Section: Numerical Simulation Of Mutually Coupled Optical Microresonamentioning

confidence: 99%

Super-efficient temporal solitons in mutually coupled optical cavities

2019

View full text Add to dashboard Cite

show abstract

“…To address these limitations, we recently introduced a heterodyne terahertz spectrometry scheme based on plasmonic photomixing [13][14][15][16][17][18][19][20]. By replacing the terahertz mixer and local oscillator of conventional heterodyne spectrometers with a plasmonic photomixer and a heterodyning optical pump beam, respectively, we demonstrated a heterodyne terahertz detector 2 with quantum-level sensitivities at room temperature and operation bandwidths exceeding 5 THz [21].…”

Section: The Manuscriptmentioning

confidence: 99%

“…Schottky diode, superconductor-insulator-superconductor (SIS), and hot electron bolometer (HEB) mixers are used for frequency-downconversion in conventional heterodyne terahertz spectrometers [6][7][8][9][10][11][12]. While conventional heterodyne terahertz spectrometers offer high spectral resolution and high sensitivity levels at cryogenic temperatures, their room temperature sensitivity and operation bandwidth are restricted by the sensitivity limitations of room-temperature terahertz mixers and frequency tunability constraints of terahertz local oscillators, respectively.To address these limitations, we recently introduced a heterodyne terahertz spectrometry scheme based on plasmonic photomixing [13][14][15][16][17][18][19][20]. By replacing the terahertz mixer and local oscillator of conventional heterodyne spectrometers with a plasmonic photomixer and a heterodyning optical pump beam, respectively, we demonstrated a heterodyne terahertz detector 2 with quantum-level sensitivities at room temperature and operation bandwidths exceeding 5 THz [21].…”

mentioning

confidence: 99%

Plasmonic heterodyne spectrometry for resolving the spectral signatures of ammonia over a 1-45 THz frequency range

Lin¹,

Çakmakyapan²,

Wang³

et al. 2019

Opt. Express

Self Cite

View full text Add to dashboard Cite

We present a heterodyne terahertz spectrometry platform based on plasmonic photomixing, which enables the resolution of narrow spectral signatures of gases over a broad terahertz frequency range. This plasmonic heterodyne spectrometer replaces the terahertz mixer and local oscillator of conventional heterodyne spectrometers with a plasmonic photomixer and a heterodyning optical pump beam, respectively. The heterodyning optical pump beam is formed by two continuous-wave, wavelength-tunable lasers with a broadly tunable terahertz beat frequency. This broadly tunable terahertz beat frequency enables spectrometry over a broad bandwidth, which is not restricted by the bandwidth limitations of conventional terahertz mixers and local oscillators. We use this plasmonic heterodyne spectrometry platform to resolve the spectral signatures of ammonia over a 1-5 THz frequency range. THE MANUSCRIPTHeterodyne terahertz spectrometry is an attractive modality for gas sensing, because it can provide high spectral resolution for resolving narrow gas spectral lines [1][2][3][4][5][6]. It involves background radiation from a terahertz or blackbody source interacting with the gas under test. The radiation received by the heterodyne spectrometer carries the spectral signatures of the gas and is mixed with a terahertz local oscillator signal to downconvert the targeted terahertz spectral signature to an intermediate frequency (IF) signal in the radio frequency (RF) range. The downconverted spectrum is then resolved by backend IF electronics. Schottky diode, superconductor-insulator-superconductor (SIS), and hot electron bolometer (HEB) mixers are used for frequency-downconversion in conventional heterodyne terahertz spectrometers [6][7][8][9][10][11][12]. While conventional heterodyne terahertz spectrometers offer high spectral resolution and high sensitivity levels at cryogenic temperatures, their room temperature sensitivity and operation bandwidth are restricted by the sensitivity limitations of room-temperature terahertz mixers and frequency tunability constraints of terahertz local oscillators, respectively.To address these limitations, we recently introduced a heterodyne terahertz spectrometry scheme based on plasmonic photomixing [13][14][15][16][17][18][19][20]. By replacing the terahertz mixer and local oscillator of conventional heterodyne spectrometers with a plasmonic photomixer and a heterodyning optical pump beam, respectively, we demonstrated a heterodyne terahertz detector 2 with quantum-level sensitivities at room temperature and operation bandwidths exceeding 5 THz [21]. In this work, we use this plasmonic photomixer to resolve the spectral signatures of ammonia. Ammonia gas sensing is of interest for agriculture, combustion exhaust treatment, clinical breath analysis, and industrial process monitoring [22][23][24][25][26]. We chose ammonia for our first spectrometry measurements because its rotational spectra in the terahertz band provide comparable intensity to the strongest infrared vibrational bands. In addition, a...

show abstract

“…Such a sub-MHz tunability for a Kerr comb could be potential in diverse applications [31] such as tunable THz applications and precision measurements.…”

mentioning

confidence: 99%

Gate-tunable frequency combs in graphene–nitride microresonators

Yao

Huang

Liu

et al. 2018

Nature

Self Cite

239

152

View full text Add to dashboard Cite

Optical frequency combs, which emit pulses of light at discrete, equally spaced frequencies, are cornerstones of modern-day frequency metrology, precision spectroscopy, astronomical observations, ultrafast optics and quantum information. Chip-scale frequency combs, based on the Kerr and Raman nonlinearities in monolithic microresonators with ultrahigh quality factors, have recently led to progress in optical clockwork and observations of temporal cavity solitons. But the chromatic dispersion within a laser cavity, which determines the comb formation, is usually difficult to tune with an electric field, whether in microcavities or fibre cavities. Such electrically dynamic control could bridge optical frequency combs and optoelectronics, enabling diverse comb outputs in one resonator with fast and convenient tunability. Arising from its exceptional Fermi-Dirac tunability and ultrafast carrier mobility, graphene has a complex optical dispersion determined by its optical conductivity, which can be tuned through a gate voltage. This has brought about optoelectronic advances such as modulators, photodetectors and controllable plasmonics. Here we demonstrate the gated intracavity tunability of graphene-based optical frequency combs, by coupling the gate-tunable optical conductivity to a silicon nitride photonic microresonator, thus modulating its second- and higher-order chromatic dispersions by altering the Fermi level. Preserving cavity quality factors up to 10 in the graphene-based comb, we implement a dual-layer ion-gel-gated transistor to tune the Fermi level of graphene across the range 0.45-0.65 electronvolts, under single-volt-level control. We use this to produce charge-tunable primary comb lines from 2.3 terahertz to 7.2 terahertz, coherent Kerr frequency combs, controllable Cherenkov radiation and controllable soliton states, all in a single microcavity. We further demonstrate voltage-tunable transitions from periodic soliton crystals to crystals with defects, mapped by our ultrafast second-harmonic optical autocorrelation. This heterogeneous graphene microcavity, which combines single-atomic-layer nanoscience and ultrafast optoelectronics, will help to improve our understanding of dynamical frequency combs and ultrafast optics.

show abstract

Globally Stable Microresonator Turing Pattern Formation for Coherent High-Power THz Radiation On-Chip

Cited by 68 publications

References 44 publications

Super-efficient temporal solitons in mutually coupled optical cavities

Super-efficient temporal solitons in mutually coupled optical cavities

Plasmonic heterodyne spectrometry for resolving the spectral signatures of ammonia over a 1-45 THz frequency range

Gate-tunable frequency combs in graphene–nitride microresonators

Contact Info

Product

Resources

About