Results 61 to 70 of about 41,304 (285)

Noise characterization of a pulse train generated by actively mode-locked lasers [PDF]

, 1996
We analyze the entire power spectrum of pulse trains generated by a continuously operating actively mode-locked laser in the presence of noise. We consider the effect of amplitude, pulse-shape, and timing-jitter fluctuations that are characterized by ...
Eliyahu, Danny, Salvatore, Randal A., Yariv, Amnon   +2 more
core   +1 more source

Modulating Two‐Photon Absorption in a Pyrene‐Based MOF Series: An In‐Depth Investigation of Structure–Property Relationships

Advanced Functional Materials, EarlyView.
This study investigates H4TBAPy‐based metal–organic frameworks (MOFs) ‐ NU‐1000, NU‐901, SrTBAPy, and BaTBAPy ‐ for multiphoton absorption (MPA) performance. It observes topology‐dependent variations in the 2PA cross‐section, with BaTBAPy exhibiting the highest activity.
Simon N. Deger, Helmy Pacheco Hernandez, Yang Cui, Hongxing Hao, Vanessa Ramm, David C. Mayer, Khai‐Nghi Truong, Roland A. Fischer, Jürgen Hauer, Mariana Kozlowska, Alexander Pöthig   +10 more
wiley   +1 more source

Low-Threshold, Multiple High-Order Harmonics Fiber Laser Employing Cr₂Si₂Te₆ Saturable Absorber

Nanomaterials, 2023
Abundant research findings have proved the value of two-dimensional (2D) materials in the study of nonlinear optics in fiber lasers. However, there remains two problems: how to reduce the start-up threshold, and how to improve the damage threshold, of ...
Nannan Xu, Xinxin Shang, Shuo Sun, Fuhao Yang, Weiyu Fan, Huanian Zhang, Dengwang Li   +6 more
doaj   +1 more source

Stable mode-locked pulses from mid-infrared semiconductor lasers [PDF]

, 2009
We report the unequivocal demonstration of mid-infrared mode-locked pulses from a semiconductor laser. The train of short pulses was generated by actively modulating the current and hence the optical gain in a small section of an edge-emitting quantum ...
A. Belyanin, Barbieri, C. Y. Song, Capasso, Capasso, Choi, Choi, Christine Y. Wang, D. Ham, de Barros, Dudley, F. X. Kärtner, Faist, Federico Capasso, French, Gibson, Gmachl, Gordon, Grant, H. Schneider, H.C. Liu, Haus, Huber, Jianmeng Li, L. Diehl, Liu, Liu, Loza-Alvarez, Lyuba Kuznetsova, M. A. Belkin, Macklin, Maier, Meshulach, Okamoto, P. Grant, Paiella, Paiella, S. Haffouz, Torre, Udem, V. M. Gkortsas, Wang, Warren, X. Li, Z. R. Wasilewski   +44 more
core   +3 more sources

Multiband Switchable Microwave Absorbing Metamaterials Based on Reconfigurable Kirigami–Origami

Advanced Functional Materials, EarlyView.
A reconfigurable metamaterial featuring tunable microwave‐absorbing and load‐bearing performance is proposed. Stretchable kirigami and bistable origami configurations are integrated as actuating components, and the synergistic deformation mechanisms are systematically analyzed.
Weimin Ding, Zhong Zhang, Zeang Zhao, Shengyu Duan, Panding Wang, Xiaogang Guo, Hongshuai Lei, Daining Fang   +7 more
wiley   +1 more source

Effective Removal of Gordon–Haus Jitter in Mode-Locked Fiber Lasers

IEEE Photonics Journal, 2018
We demonstrate the effective removal of Gordon–Haus (GH) jitter in mode-locked fiber lasers based on the narrow bandpass filtering, verified from large positive dispersion to large negative dispersion.
Peng Qin, Sijia Wang, Minglie Hu, Youjian Song   +3 more
doaj   +1 more source

Optical phase noise and carrier-envelope offset noise of mode-locked lasers [PDF]

, 2018
The timing jitter, optical phase noise, and carrier-envelope offset (CEO) noise of passively mode-locked lasers are closely related. New key results concern analytical calculations of the quantum noise limits for optical phase noise and CEO noise ...
Keller, U., Paschotta, R., Schlatter, A., Telle, H.R., Zeller, S.C.   +4 more
core  

Modeling of mode-locking in a laser with spatially separate gain media [PDF]

, 2010
We present a novel laser mode-locking scheme and discuss its unusual properties and feasibility using a theoretical model. A large set of single-frequency continuous-wave lasers oscillate by amplification in spatially separated gain media.
Aschwanden, Byrne, C. J. Lee, Daneu, Eng, Garner, Grange, H. L. Offerhaus, Hansteen, Harding, Heck, Hänsch, K. -. Boller, Keller, Keller, Keller, Klein, Kobayashi, P. D. Van Voorst, Pfeiffer, R. M. Oldenbeuving, Robertson, Rooth   +22 more
core   +6 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