Results 41 to 50 of about 171,254 (238)

Response of a Bell–Bloom Magnetometer to a Magnetic Field of Arbitrary Direction

Sensors, 2018
The Bell–Bloom magnetometer in response to a magnetic field of arbitrary direction is observed theoretically and experimentally. A theoretical model is built from a macroscopic view to simulate the magnetometer frequency response to an external ...
Zhichao Ding, Jie Yuan, Xingwu Long
doaj   +1 more source

The Influence of Noise Floor on the Measurement of Laser Linewidth Using Short-Delay-Length Self-Heterodyne/Homodyne Techniques

Micromachines, 2022
Delayed self-heterodyne/homodyne measurements based on an unbalanced interferometer are the most used methods for measuring the linewidth of narrow-linewidth lasers.
Zhongan Zhao, Zhenxu Bai, Duo Jin, Xiaojing Chen, Yaoyao Qi, Jie Ding, Bingzheng Yan, Yulei Wang, Zhiwei Lu, Richard P. Mildren   +9 more
doaj   +1 more source

Phonon dispersion and lifetimes in MgB2 [PDF]

, 2003
We measure phonon dispersion and linewidth in a single crystal of MgB_2 along the Gamma-A, Gamma-M and A-L directions using inelastic X-Ray scattering.
Abhay Shukla, Christophe Bellin, D. Daghero, Francesco Mauri, G. Grimvall, H. J. Choi, J. Jun, J. Karpinski, K. Parlinski, Matteo Calandra, Matteo d’Astuto, Michael Krisch, Michele Lazzeri, P. B. Allen, P. B. Allen, S. M. Kazakov   +15 more
core   +2 more sources

Tutorial on narrow linewidth tunable semiconductor lasers using Si/III-V heterogeneous integration

APL Photonics, 2019
Narrow linewidth lasers have many applications, such as higher order coherent communications, optical sensing, and metrology. While semiconductor lasers are typically unsuitable for such applications due to relatively low coherence, recent advances in ...
M. Tran, Duanni Huang, J. Bowers
semanticscholar   +1 more source

High-Power Narrow-Linewidth Q-Switched TEM₀₀ Mode 355-nm Laser

IEEE Photonics Journal, 2018
We report on a high pulse energy, narrow-linewidth, Q-switched ultraviolet (UV) laser at 355 nm from the third harmonic generation (THG) of a 1064-nm Nd:YAG master oscillator power amplifier (MOPA) system.
Yujiao Li, Wei Tu, Baoshang Wang, Nan Zong, Feng Yang, Fengfeng Zhang, Shenjin Zhang, Zhimin Wang, Qinjun Peng, Dafu Cui, Zuyan Xu   +10 more
doaj   +1 more source

Laser Linewidth Compression in Cascading Brillouin Random Fiber Lasers

IEEE Photonics Journal, 2022
Cascaded Brillouin random fiber lasers (BRFLs) with laser linewidth compression were theoretically and experimentally demonstrated. Thanks to photon-phonon coupled interplay as well as randomly distributed feedback along silica fibers, the coherent time ...
Yikun Jiang, Liang Zhang, Haozhe Shou, Haoran Xie, Jilin Zhang, Yichun Li, Ying Zhang, Fufei Pang, Tingyun Wang   +8 more
doaj   +1 more source

Passive intrinsic-linewidth narrowing of ultraviolet extended-cavity diode laser by weak optical feedback [PDF]

, 2014
We present a simple method for narrowing the intrinsic Lorentzian linewidth of a commercial ultraviolet grating extended-cavity diode laser (TOPTICA DL Pro) using weak optical feedback from a long external cavity.
Braverman, Boris, Bylinskii, Alexei, Gangloff, Dorian, Kaenders, Wilhelm, Kawasaki, Akio, Lin, Qian, Raab, Christoph, Samutpraphoot, Polnop, Vuletić, Vladan, Weber, Sophie   +9 more
core   +2 more sources

A Cost-Effective Distributed Acoustic Sensor Using a Commercial Off-the-Shelf DFB Laser and Direct Detection Phase-OTDR

IEEE Photonics Journal, 2016
We propose and experimentally demonstrate the use of cyclic pulse coding for enhanced performance in distributed acoustic sensing based on a phase-sensitive optical time-domain reflectometry ( $\phi$-OTDR) using direct detection.
Yonas Muanenda, Claudio J. Oton, Stefano Faralli, Fabrizio Di Pasquale   +3 more
doaj   +1 more source

Fabrication tolerant silicon MZI filter [PDF]

, 2014
A compact fabrication tolerant MZI filter is demonstrated. The measured device shows a 20-fold improved tolerance to systematic waveguide linewidth variations, with a wavelength shift of less than 60 pm/mm linewidth ...
Bogaerts, Wim, D'heer, Herbert, Dwivedi, Sarvagya   +2 more
core   +1 more source

Convolution Error Reduction for a Fabry–Pérot-Based Linewidth Measurement: A Theoretical and Experimental Study

Photonics, 2022
Linewidth measurement of a short pulse single-longitudinal mode laser with a low repetition rate has been a big challenge. Although the Fabry–Pérot (FP) etalon in combination with a beam profiler is an effective approach to measure the linewidth, the ...
Xuanning Hun, Zhenxu Bai, Jianping Wang, Bin Chen, Can Cui, Yulei Wang, Zhiwei Lu   +6 more
doaj   +1 more source