31 papers
Single-photon time-stretch computational ghost spectroscopy
Zhibin Zhao, Kun Huang, Ben Sun +4
Time-stretch spectroscopy is powerful for capturing transient spectral phenomena but remains fundamentally limited by detector bandwidth or timing jitter, especially under photon-s…
Mid-infrared snapshot spectral imaging via nonlinear radial dispersion
Jianan Fang, Kun Huang, Ruiyang Qin +2
Mid-infrared (MIR) spectral imaging provides chemically specific contrast through molecular vibrational fingerprints, yet snapshot acquisition remains severely limited by the lack…
Highly efficient difference-frequency generation for mid-infrared pulses by passively synchronous seeding
Kun Huang, Yinqi Wang, Jianan Fang +5
We have proposed and experimentally demonstrated a novel scheme for efficient mid-infrared difference-frequency generation based on passively synchronized fiber lasers. The adoptio…
Mid-infrared photon counting and resolving via efficient frequency upconversion
Kun Huang, Yinqi Wang, Jianan Fang +3
Optical detectors with single-photon sensitivity and large dynamic range would facilitate a variety of applications. Especially, the capability of extending operation wavelengths i…
Highly sensitive detection for infrared photons by non-degenerate two-photon absorption under mid-infrared pumping
Jianan Fang, Yinqi Wang, Ming Yan +3
We have demonstrated highly-sensitive photon counting in the infrared based on the two-photon absorption (2PA) in a silicon avalanche photodiode, where the required photon energy f…
Passive repetition-rate stabilization for a mode-locked fiber laser by electro-optic modulation
Tingting Yu, Shuhong Jiang, Jianan Fang +5
We report a passive stabilization of the repetition rate for a mode-locked fiber laser by using an electro-optic modulator in a phase-biased nonlinear amplifying loop mirror. The u…