Parameter adjustable mid-infrared ultra-short pulse-burst laser around 2.94 μm
Year: 2025
Type: article
Abstract: crystal. A uniform pulse laser at 1.03 μm with a sub-GHz repetition rate was first modulated into parameter adjustable burst modes, which subsequently served as the pump seed for the DFG process. A pulsed super-luminescent light emitting diode (SLED) was designed to synchronize with the pump burst duration and applied as the seed of signal wave. Synchronization was assured by utilizing separate channels of a single arbitrary waveform generator to control both the pulse picker and the SLED driver, thereby enabling the parameter-adjustment of the MIR burst. When the incident pump power was 18.8 W and the signal power was 2.51 W, a maximum MIR idler power of 1.33 W was obtained at 2941 nm with 1.5 MHz burst repetition rate and ∼ 60 ns width, corresponding to a total burst energy of 0.9 μJ. Such parameter adjustable MIR ultra-short pulse burst laser source is particularly promising for tissue ablation due to its high ablation efficiency, lower thermal damage and flexible operation mode.
Source: Optics Express
DOI: 10.1364/oe.553327
Authors: Yongchang Zhang, Bowen Zheng, Xupeng Wang, Xinxin Jin, Zhihong Li, Yanmin Duan, Haiyong Zhu, Yonghang Shen
Institution: Zhejiang University
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,270
OpenAlex ID: W4408219776