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Yung‐Cheng Kao, J H Huang, Ian Briggs, Pao-Kang Chen et autres
Optical parametric amplifiers (OPAs) are promising to overcome the wavelength coverage and noise limitations in conventional optical amplifiers based on rare-earth doping and semiconductor gain. However, the high power requirement remains a major obstacle to the widespread use of OPAs. Integrated OPAs …
Liang Zhang, Chaohan Cui, Yongzhou Xue, Pao-Kang Chen et autres
The interaction between photons and phonons plays a crucial role in broad areas ranging from optical sources and modulators to quantum transduction and metrology. The performance can be further improved using integrated photonic-phononic devices, promising enhanced interaction strength and large-scale integration. While …
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Liang Zhang, Chaohan Cui, Yongzhou Xue, Pao-Kang Chen et autres
The interaction between photons and phonons plays a crucial role in broad areas ranging from optical sources and modulators to quantum transduction and metrology. The performance can be further improved using integrated photonic-phononic devices, promising enhanced interaction strength and large-scale integration. While …
Ian Briggs, Pao-Kang Chen, Linran Fan
Second-harmonic generation (SHG) plays a significant role in modern photonic technology. Integrated photonic resonators fabricated with thin-film lithium niobate can achieve ultrahigh efficiencies by combining small mode volumes with high material nonlinearity. Cavity-enhanced SHG requires accurate phase and frequency matching conditions, where …
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Chaohan Cui, Liang Zhang, Bo-Han Wu, Shuai Liu et autres
We show that it is unreliable to determine the coupling condition of optical resonances by analyzing the extinction ratio change with wavelengths. We propose and demonstrate the unambiguous discrimination between under- and over-coupled resonances using binary phase modulation in power transmission measurement.
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Liang Zhang, Chaohan Cui, Pao-Kang Chen, Linran Fan
Acousto-optic modulation in piezoelectric materials offers the efficient method to bridge electrical and optical signals. It is widely used to control optical frequencies and intensities in modern optical systems including Q -switch lasers, ion traps, and optical tweezers. It is also critical …
Pao-Kang Chen, Ian Briggs, Chaohan Cui, Liang Zhang et autres
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Pao-Kang Chen, Ian Briggs, Chaohan Cui, Liang Zhang et autres
Nonlinear frequency mixing is of critical importance in extending the wavelength range of optical sources. It is also indispensable for emerging applications such as quantum information and photonic signal processing. Conventional lithium niobate with periodic poling is the most widely used device …
Manav Shah, Ian Briggs, Pao-Kang Chen, Songyan Hou et autres
Optical isolators are an essential component of photonic systems. Current integrated optical isolators have limited bandwidths due to stringent phase-matching conditions, resonant structures, or material absorption. Here, we demonstrate a wideband integrated optical isolator in thin-film lithium niobate photonics. We use dynamic …
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Liang Zhang, Pao-Kang Chen, Ian Briggs, Chaohan Cui et autres
Photons play a critical role in future quantum technology, due to its indispensable function as quantum information carrier over long distances. The efficient generation of quantum states is the foundation of quantum photonic technology. In particular, advanced quantum states beyond single-photon pairs …
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Liang Zhang, Chaohan Cui, Pao-Kang Chen, Linran Fan
Acousto-optic modulation in piezoelectric materials offers the efficient method to bridge electrical and optical signals. It is widely used to control optical frequencies and intensities in modern optical systems including Q-switch lasers, ion traps, and optical tweezers. It is also critical for …
Manav Shah, Ian Briggs, Pao-Kang Chen, Songyan Hou et autres
Current integrated optical isolators have limited bandwidths due to stringent phase-matching, resonant structures, or absorption. We demonstrate broadband optical isolation in thin-film lithium niobate that simultaneously achieves ∼ 100 nm isolation bandwidth at visible and telecom wavelengths.
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