Search

Your search keyword '"Changyong Lan"' showing total 2 results
Start Over Author "Changyong Lan" Publisher ieee
2 results on '"Changyong Lan"'

1. L-band passively mode-locked fiber laser based on WS2 saturable absorber

Author

Wenxiong Du, Shen Shengnan, Yong Liu, Heping Li, Junwen Li, and Changyong Lan

Subjects
Materials science, business.industry, Pulse duration, Saturable absorption, Chemical vapor deposition, Laser, law.invention, law, Fiber laser, Monolayer, Optoelectronics, Absorption (electromagnetic radiation), business, Ultrashort pulse
Abstract

We demonstrate a compact erbium-doped fiber ring laser mode-locked by a WS 2 saturable absorber (SA), which operates in the telecommunication L-band. The monolayer WS 2 is synthesized by an enhanced chemical vapor deposition (CVD) method and transferred onto the end face of a fiber connector to form a fiber-compatible WS 2 SA. Stable soliton pulses centered at 1602.2 nm with a pulse duration of 1.19 ps are achieved in the laser. Our research results show that monolayer WS 2 is a promising material for L-band ultrashort pulse generation.

Published
2018

2. Passively $Q$ -Switched Erbium-Doped Fiber Laser Based on Few-Layer MoS2 Saturable Absorber.

Author

Heping Li, Handing Xia, Changyong Lan, Chun Li, Xiaoxia Zhang, Jianfeng Li, and Yong Liu

Abstract

We demonstrate a passively Q-switched erbium-doped fiber laser (EDFL) based on few-layer MoS2 as a saturable absorber (SA). Few-layer MoS2 is prepared by the chemical vapor deposition method. The prepared MoS2 is transferred onto the end face of a fiber connector to form a fiber-compatible MoS2-based SA. The saturation intensity and modulation depth of the MoS2 SA are measured to be 0.43 MW/cm2 and 33.2%, respectively. The Q-switched EDFL has an all-fiber linear cavity with two fiber Bragg gratings as the end mirrors. By inserting the MoS2 SA into the laser cavity, stable Q-switched operation is achieved at 1.55 μm. The laser has a pump threshold of 20.4 mW, a pulse repetition rate tunable from 10.6 to 173.1 kHz, and a minimum pulse duration of 1.66 μs. Our results show that few-layer MoS2 is a promising SA for Q-switching laser operation. [ABSTRACT FROM PUBLISHER]

Published
2015
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results