Results 81 to 90 of about 290,535 (344)

Laser mode-locking with saturable absorbers [PDF]

, 1967
In this paper we describe a mode-locked laser in terms of traveling pulses of light. We show that the energy absorbed by a saturable absorber is a minimum if the pulselength is a minimum, and that two pulses are essentially as favorable as one if they ...
Garmire, Elsa M., Yariv, Amnon
core   +2 more sources

Mode‐locked Yb:LuAG ceramics laser

physica status solidi c, 2013
AbstractA diode‐pumped Yb:LuAG ceramics laser was investigated. CW laser performance was achieved. Passively femtosecond mode‐locked laser operation was also successfully realized by using a SESAM mirror. The mode‐locked pulse duration as short as 650 fs was obtained with a maximum output power of 200 mW. (© 2013 WILEY‐VCH Verlag GmbH & Co.
Luo, Dewei, Zhang, Jian, Xu, Changwen, Lin, Hui, Yang, Hao, Zhu, Haiyong, Shao, Guodong, Tang, Dingyuan, Kong, Ling Bing   +8 more
openaire   +3 more sources

The Dynamics of Interfacial Trap States in High‐Detectivity Near‐Infrared Photomultiplication Organic Photodetectors

Advanced Functional Materials, EarlyView.
Photomultiplication organic photodetectors (PM OPDs) are an attractive strategy for health‐monitoring. Here, PM‐OPDs are reported with a specific detectivity of 5.7 × 1012 Jones and external quantum efficiency values of 3500% under −10 V. The dynamics of carrier trapping in these devices are elucidated through trap selective spectroscopical techniques.
Marie Houot, Zhuoran Qiao, Beier Hu, Davide Nodari, Francesco Furlan, Filip Aniés, Yicheng Yang, Martin Heeney, Artem A. Bakulin, Nicola Gasparini   +9 more
wiley   +1 more source

Determination of the zero-position for an optical angle sensor

Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2016
This paper proposes a new optical angle sensor, in which a mode-locked femtosecond laser referred to as the optical frequency comb is employed as the light source for the sensor.
Jun TAMADA, Yukitoshi KUDO, Yuan-Liu CHEN, Yuki SHIMIZU, Wei GAO   +4 more
doaj   +1 more source

Generation of 48 fs, 1 GHz Fundamentally Mode-Locked Pulses Directly from an Yb-doped “Solid-State Fiber Laser”

Photonics, 2023
We demonstrate a fundamentally mode-locked Yb-doped “solid-state fiber laser” with a repetition rate of 1 GHz and a pulse duration of 48 fs. The nonlinear-polarization-evolution (NPE) mode-locking of the “solid-state fiber laser” enables up to 286 mW of ...
Mengyun Hu, Jiawei Shen, Yuzhi Cao, Shuai Yuan, Heping Zeng   +4 more
doaj   +1 more source

Vector Dissipative Solitons in Graphene Mode Locked Fiber Lasers

, 2010
Vector soliton operation of erbium-doped fiber lasers mode locked with atomic layer graphene was experimentally investigated. Either the polarization rotation or polarization locked vector dissipative solitons were experimentally obtained in a dispersion-
Akhmediev, Akhmediev, Bale, Bao, Bao, Cabasse, Chang, Chen, Dennis, Dingyuan Tang, Duling, Geim, Han Zhang, Kalashnikov, Kalashnikov, Kian Ping Loh, Kieu, Komarov, Liu, Luming Zhao, Mesentsev, Mollenauer, Nair, Qiaoliang Bao, Renninger, Song, Tang, Turitsyn, Wise, Zavyalov, Zhang, Zhang, Zhang, Zhang, Zhang, Zhao   +35 more
core   +1 more source

Generation of microwave fields in cavities with laser-excited nonlinear media: competition between the second- and third-order optical nonlinearities [PDF]

, 2018
We discuss a scheme for the parametric amplification of the quantum fluctuations of the electromagnetic vacuum in a three-dimensional microwave resonator, and report the preliminary measurements to test its feasibility. In the present experimental scheme,
Borghesani, A. F., Braggio, C., Carugno, G., Dodonov, V. V., Pirzio, F., Ruoso, G.   +5 more
core   +1 more source

Spectrally Tunable 2D Material‐Based Infrared Photodetectors for Intelligent Optoelectronics

Advanced Functional Materials, EarlyView.
Intelligent optoelectronics through spectral engineering of 2D material‐based infrared photodetectors. Abstract The evolution of intelligent optoelectronic systems is driven by artificial intelligence (AI). However, their practical realization hinges on the ability to dynamically capture and process optical signals across a broad infrared (IR) spectrum.
Junheon Ha, Yingshan Ma, Yong Nam An, Sung‐Un An, Hyeon Hak Jung, Suvi‐Tuuli Varjamo, Jiwon Yoo, Junho Min, Hanvit Kim, Faisal Ahmed, Sang Hoon Chae, Young Min Song, Weiwei Cai, Tawfique Hasan, Zhipei Sun, Dong‐Ho Kang, Hyeon‐Jin Shin, Yunyun Dai, Hoon Hahn Yoon   +18 more
wiley   +1 more source

Photo‐Switching Thermal and Lithium‐Ion Conductivity in Azobenzene Polymers

Advanced Functional Materials, EarlyView.
Light‐responsive azobenzene polymers control thermal and ionic transport simultaneously through structural transitions. UV illumination disrupts π–π stacking, converting crystalline trans states to amorphous cis configurations. Thermal conductivity drops from 0.45 to 0.15 W·m−1·K−1 while Li+ diffusivity increases 100 fold. This dual transport switching
Jaeuk Sung, Jungwoo Shin, Qiujie Zhao, Minjee Kang, Christopher Evans, Cecilia Leal, Paul V. Braun, David G. Cahill   +7 more
wiley   +1 more source

Dual-wavelength dispersion-managed soliton all-fiber mode-locked laser based on birefringence-filtered nonlinear polarization evolution

Results in Optics, 2022
Single-cavity dual-comb mode-locked lasers, an emerging dual-comb technology, can generate two sets of pulse sequences with excellent mutual coherence, thus eliminating the need for complex active noise reduction systems. We report the generation of dual-
Shuang Niu, Runmin Liu, Defeng Zou, Youjian Song, Minglie Hu   +4 more
doaj   +1 more source