3 citations · 13 across the 11 of their papers we have counts for
11 papers
B-spline freeform surface tailoring for prescribed irradiance based on differentiable ray-tracing
Haoqiang Wang, Zihan Zang, Yunpeng Xu +3
A universal and flexible design method for freeform surface that can modulate the distribution of an zero-étendue source to an arbitrary irradiance distribution is a significant ch…
Planar multi-aperture fish-eye lens using metagrating
Zihan Zang, Haoqiang Wang, Yanjun Han +3
The design of compact optical systems with large field of view has been difficult due to the requirement of many elements or a curved focal plane to reduce off-axis aberration. We…
Ultrafast Parallel LiDAR with Time-encoding and Spectral Scanning: Breaking the Time-of-flight Limit
Zihan Zang, Zhi Li, Yi Luo +3
Light detection and ranging (LiDAR) has been widely used in autonomous driving and large-scale manufacturing. Although state-of-the-art scanning LiDAR can perform long-range three-…
Low half-wave-voltage, ultra-high bandwidth thin-film LiNbO3 modulator based on hybrid waveguide and periodic capacitively loaded electrodes
Xuecheng Liu, Bing Xiong, Changzheng Sun +7
A novel thin-film LiNbO3 (TFLN) electro-optic modulator is proposed and demonstrated. LiNbO3-silica hybrid waveguide is adopted to maintain low optical loss for an electrode spacin…
Soliton dynamics in microresonators with XPM induced negative thermo-optic effect
Yanzhen Zheng, Changzheng Sun, Bing Xiong +10
Optical frequency comb generation in microresonators has attracted significant attention over the past decade, as it offers the promising potential for chip-scale optical frequency…
Integrated Gallium Nitride Nonlinear Photonics
Yanzhen Zheng, Changzheng Sun, Bing Xiong +7
Gallium nitride (GaN) as a wide-band gap material has been widely used in solid-state lighting. Thanks to its high nonlinearity and high refractive index contrast, GaN-on-insulator…
Electrically Pumped Orbital Angular Momentum (OAM) Laser at Telecom Wavelengths
Juan Zhang, Changzheng Sun, Bing Xiong +13
Semiconductor lasers capable of generating a vortex beam with a specific orbital angular momentum (OAM) order are highly attractive for applications ranging from nanoparticle manip…
Broadband frequency comb generation in aluminum nitride-on-sapphire microresonators
Xianwen Liu, Changzheng Sun, Bing Xiong +10
Development of chip-scale optical frequency comb with the coverage from ultra-violet (UV) to mid-infrared (MIR) wavelength is of great significance. To expand the comb spectrum int…
InGaN/GaN Multi-Quantum-Well and Light-Emitting Diode Based on V-pit-Shaped GaN Grown on Patterned Sapphire Substrate
Lai Wang, Xiao Meng, Di Yang +8
V-pit-defects in GaN-based light-emitting diodes induced by dislocations are considered beneficial to electroluminescence because they relax the strain in InGaN quantum wells and a…
"WM"-Shaped Growth of GaN on Patterned Sapphire Substrates
Lai Wang, Xiao Meng, Di Yang +7
In metal organic vapor phase epitaxy of GaN, the growth mode is sensitive to reactor temperature. In this study, V-pit-shaped GaN has been grown on normal c-plane cone-patterned sa…
Continuous-wave Raman Lasing in Aluminum Nitride Microresonators
Xianwen Liu, Changzheng Sun, Bing Xiong +10
We report the first investigation on continuous-wave Raman lasing in high-quality-factor aluminum nitride (AlN) microring resonators. Although wurtzite AlN is known to exhibit six…