105 citations · 320 across the 16 of their papers we have counts for
17 papers
Segment-chirped periodically poled lithium niobate waveguides for broadband supercontinuum generation
Yue Li, Xiaodong Shi, Sakthi Sanjeev Mohanraj +7
Supercontinuum generation is a key technology in nonlinear optics, supporting a wide range of applications in frequency metrology and spectroscopy. Integrated photonics offers a pr…
Broadband Continuous Frequency Tuning in Non-Hermitian Laser Arrays Enabled by Mode-Switching Boundary Topology
Chuanfeng Yan, Cheng Tan, Kai Wang +6
Broadband and continuous frequency tuning is central to the versatility of semiconductor lasers, yet existing approaches typically rely on external moving components, limiting scal…
Resolution and Robustness Bounds for Reconstructive Spectrometers
Changyan Zhu, Hsuan Lo, Jianbo Yu +2
Reconstructive spectrometers are a promising emerging class of devices that combine complex light scattering with inference to enable compact, high-resolution spectrometry. Thus fa…
Wavelength-scale noise-resistant on-chip spectrometer
Jianbo Yu, Hsuan Lo, Wenduo Chen +10
Performant on-chip spectrometers are important for advancing sensing technologies, from environmental monitoring to biomedical diagnostics. As device footprints approach the scale…
Enabling Highly Efficient Infrared Silicon Photodetectors via Disordered Metasurfaces with Upconversion Nanoparticles
Wei Chen, Shutao Zhang, Chongwu Wang +12
Silicon photodetectors are highly desirable for their CMOS compatibility, low cost, and fast response speed. However, their application the infrared (IR) is limited by silicon's in…
Topological photonic crystal fibre
Bofeng Zhu, Kevin Hean, Stephan Wong +8
Photonic crystal fibres (PCFs) are optical fibres that guide light using a modulated dielectric medium. They provide an exceptionally versatile platform for various applications, t…
Impact of cavity geometry on microlaser dynamics
Kyungduk Kim, Stefan Bittner, Yuhao Jin +3
We experimentally investigate spatio-temporal lasing dynamics in semiconductor microcavities with various geometries, featuring integrable or chaotic ray dynamics. The classical ra…
Spatio-temporal lasing dynamics in a Limaçon-shaped microcavity
Kyungduk Kim, Stefan Bittner, Yuhao Jin +3
Limaçon-shaped microdisk lasers are promising on-chip light sources with low lasing threshold and unidirectional output. We conduct an experimental study on the lasing dynamics of…
Anomalous single-mode lasing induced by nonlinearity and the non-Hermitian skin effect
B. F. Zhu, Q. Wang, D. Leykam +3
Single-mode operation is a desirable but elusive property for lasers operating at high pump powers. Typically, single-mode lasing is attainable close to threshold, but increasing t…
Strain effects on Phase-Filling Singularities in Highly Doped n-Type Ge
Zhigang Song, Wei-Jun Fan, C. S. Tan +4
Recently, Chi Xu et al. predicted the phase-filling singularities (PFS) in the optical dielectric function (ODF) of the highly doped -type Ge and confirmed in experiment the PFS…
Spatial structure of lasing modes in wave-chaotic semiconductor microcavities
Stefan Bittner, Kyungduk Kim, Yongquan Zeng +2
We present experimental and numerical studies of broad-area semiconductor lasers with chaotic ray dynamics. The emission intensity distributions at the cavity boundaries are measur…
Band structure of strained GeSn alloy: a full-zone 30-band model
Zhigang Song, Weijun Fan, Chuan Seng Tan +4
We extend the previous 30-band model effectively employed for relaxed GeSn alloy to the case of strained GeSn alloy. The strain-relevant p…
Electrically pumped semiconductor laser with low spatial coherence and directional emission
Kyungduk Kim, Stefan Bittner, Yongquan Zeng +3
We design and fabricate an on-chip laser source that produces a directional beam with low spatial coherence. The lasing modes are based on the axial orbit in a stable cavity and ha…
Band structure of GeSnalloy: a full-zone 30-band model
Zhigang Song, Weijun Fan, Chuanseng Tan +4
A full-zone 30-band model is developed as an efficient and reliable tool to compute electronic band structure in GeSn alloy. The model was first used to…
All-dielectric active photonics driven by bound states in the continuum
Song Han, Longqing Cong, Yogesh Kumar Srivastava +6
Recently emerged dielectric resonators and metasurfaces offer a low-loss platform for efficient manipulation of electromagnetic waves from microwave to visible. Such flat meta-opti…
Metal-Dielectric-Graphene Sandwich for Surface Enhanced Raman Spectroscopy
Xuechao Yu, Jin Tao, Youde Shen +4
Raman intensity of Rhodamine B (RhB) is enhanced by inserting a thin high \k{appa} dielectric layer which reduces the surface plasmon damping at the gold-graphene interface. The re…
Effects of carbon nanotubes and graphene oxide absorbers on the noise of mode-locked fiber lasers
Xiaohui Li, Kan Wu, Xuechao Yu +9
Phase noise is very important for the ultrafast pulse application in telecommunication, ultrafast diagnose, material science, and biology. In this paper, two types of carbon nano-m…