Results 51 to 60 of about 5,726,665 (192)

Tellurene-based saturable absorber to demonstrate large-energy dissipative soliton and noise-like pulse generations

Nanophotonics, 2020
Two-dimensional layered monoelemental materials (Xenes) with excellent optoelectronic properties have various property-related applications, such as energy, biomedicine, and optoelectronic devices.
Xu Nannan, Ma Pengfei, Fu Shenggui, Shang Xinxin, Jiang Shouzhen, Wang Shuyun, Li Dengwang, Zhang Huanian   +7 more
doaj   +1 more source

Single-molecule imaging with longer X-ray laser pulses

IUCrJ, 2015
During the last five years, serial femtosecond crystallography using X-ray laser pulses has been developed into a powerful technique for determining the atomic structures of protein molecules from micrometre- and sub-micrometre-sized crystals. One of the
Andrew V. Martin, Justine K. Corso, Carl Caleman, Nicusor Timneanu, Harry M. Quiney   +4 more
doaj   +1 more source

In-fiber subpicosecond pulse shaping for nonlinear optical telecommunication data processing at 640 Gbit/s [PDF]

, 2012
We review recent work on all-fiber (long-period fiber grating) devices for optical pulse shaping, particularly flat-top pulse generation, down to the subpicosecond range and their application for nonlinear switching (demultiplexing) of optical time ...
A. T. Clausen, Mulvad, H.C.H., Mulvad, Hans Christian Hansen, Galili, Michael, Azaña, J., Galili, M., Palushani, Evarist, Hu, Hao, Clausen, Anders, L. K. Oxenløwe, Slavík, R., Oxenløwe, Leif Katsuo, Palushani, E., Oxenløwe, L.K., E. Palushani, Jeppesen, P., J. Azaña, Hu, H., Y. Park, Park, Y., P. Jeppesen, H. Hu, H. C. H. Mulvad, Clausen, A.T., M. Galili, Jeppesen, Palle, R. Slavík   +26 more
core   +1 more source

A Bidirectional Mode-Locked Fiber Laser for Asynchronous Noise-like Pulse Generation

Photonics
We demonstrate a bidirectional fiber laser with an artificial saturable absorber of a step-index multimode fiber sandwiched by single-mode fibers. Two asynchronous noise-like pulse sequences with a repetition frequency difference of 3.16 kHz are obtained.
Yongguo Zheng, Anshuang Wang, Yue Cai, Fan Zhang, Xinhai Zhang   +4 more
doaj   +1 more source

Jitter-Robust Orthogonal Hermite Pulses for Ultra-Wideband Impulse Radio Communications

EURASIP Journal on Advances in Signal Processing, 2005
The design of a class of jitter-robust, Hermite polynomial-based, orthogonal pulses for ultra-wideband impulse radio (UWB-IR) communications systems is presented.
Ryuji Kohno, Craig John Mitchel, Giuseppe Thadeu Freitas de Abreu   +2 more
doaj   +1 more source

Dynamic Observation of Ultrashort Pulses with Chaotic Features in a Tm-Doped Fiber Laser with a Single Mode Fiber–Grade Index Multimode Fiber–Single Mode Fiber Structure

Photonics
In this study, we have demonstrated an ultrafast Tm-doped fiber laser utilizing the nonlinear multimode interference (NL-MMI) effect, with a single mode fiber–grade index multimode fiber–single mode fiber (SMF-GIMF-SMF) structure serving as the saturable
Zhenhong Wang, Zexin Zhou, Yubo Ji, Qiong Zeng, Yufeng Song, Geguo Du, Hongye Li   +6 more
doaj   +1 more source

Fiber-laser-generated Noise-like Pulses and Their Applications

, 2016
We describe generation and amplification of mediumand high-energy noise-like pulses (NLPs) using Yb-doped optical fibers. We also demonstrate supercontinuum (SC) genera‐ tion techniques in which NLPs serve as the pump. SC pumped by NLPs has been em‐ ployed successfully in optical coherence tomography systems.
Ci-Ling Pan, Alexey Zaytse, Yi-Jing You, Chih-Hsuan Li   +3 more
openaire   +2 more sources

Efficient Pulsed Raman Laser with Wavelength above 2.1 μm Pumped by Noise‐Like Pulse

Advanced Photonics Research
Herein, the efficiently high‐power pulsed Raman lasers with wavelength above 2.1 μm are experimentally demonstrated relying on the stimulated Raman scattering.
Meng Wang, Deqin Ouyang, Yu Lin, Yewang Chen, Minqiu Liu, Junqing Zhao, Xing Liu, Shuangchen Ruan   +7 more
doaj   +1 more source

Observation and optimization of 2 μm mode-locked pulses in all-fiber net anomalous dispersion laser cavity

Opto-Electronic Advances, 2020
We integrally demonstrate 2 μm mode-locked pulses performances in all-fiber net anomalous dispersion cavity. Stable mode-locking operations with the center wavelength around 1950-1980 nm can be achieved by using the nonlinear polarization rotation ...
Ma Wanzhuo, Zhao Desheng, Liu Runmin, Wang Tianshu, Yuan Quan, Xiong Hao, Ji Haiying, Jiang Huilin   +7 more
doaj   +1 more source

Buildup dynamics of broadband Q-switched noise-like pulse

, 2021
We investigate the buildup dynamics of broadband Q-switched noise-like pulse (QS-NLP) driven by slow gain dynamics in a microfiber-based passively mode-locked fiber laser. Based on shot-to-shot tracing of the transient optical spectra and qualitatively reproduced numerial simulation, we demonstrate that slow gain dynamics is deeply involved in the ...
Zhou, Ji, Li, Yuhang, Yang, Qing, Ma, Yaoguang, Liu, Qiang   +4 more
openaire   +2 more sources