Results 31 to 40 of about 62,046 (293)

Linewidth narrowing in free-space-running diamond Brillouin lasers

High Power Laser Science and Engineering, 2023
This study analyzes the linewidth narrowing characteristics of free-space-running Brillouin lasers and investigates the approaches to achieve linewidth compression and power enhancement simultaneously.
Duo Jin, Zhenxu Bai, Zhongan Zhao, Yifu Chen, Wenqiang Fan, Yulei Wang, Richard P. Mildren, Zhiwei Lü   +7 more
doaj   +1 more source

Linewidth characteristics of un-cooled fiber grating Fabry–Perot laser controlled by the external optical feedback [PDF]

, 2013
The effect of external optical feedback (OFB) on the linewidth characteristics of un-cooled laser module is theoretically investigated. This laser that consists of a Fabry–Perot (FP) laser diode and fiber Bragg grating (FBG) realizes stable operation and
Abas, Ahmad Fauzi, Hisham, Hisham Kadhum, Mahdi, Mohd Adzir, Muhammad Noor, Ahmad Shukri   +3 more
core   +1 more source

Study on external cavity diode laser with a wide mode-hopping free tuning range

Frontiers in Physics, 2022
A wide mode-hopping free and narrow linewidth tunable laser diode source with a Littman-Metcalf arrangement based on a diffraction grating is presented. Several experiments are carried out to demonstrate the tuning characteristics and spectral linewidth ...
Aiguo Zhang, Shan Qiao, Liwen Sheng, Liwen Sheng, Liwen Sheng, Lin Huang, Lin Huang, Lin Huang, Zhiming Liu, Junwei Ju, Zhihui Zhang, Bingqi Yin, Peng Li, Jiaqing Liu, Jiaqing Liu, Yu Wei   +15 more
doaj   +1 more source

Cost efficient narrow linewidth laser transmitter for coherent detection [PDF]

, 2008
Authors present a cost efficient narrow linewidth laser transmitter for future coherent detection systems. The spectral purity of the laser allows the phase modulation of data signals at bit rates as low as 155 Mb ...
Anandarajah, Prince M., Barry, Liam P., Ellis, A.D., Kaszubowska-Anandarajah, Aleksandra, Kelly, Brian, Mishra, A.K., O'Gorman, J., Perry, Philip, Phelan, Richard, Reid, Douglas A.   +9 more
core   +1 more source

Prospects for a Millihertz-Linewidth Laser [PDF]

Physical Review Letters, 2009
We propose a new light source based on having alkaline-earth atoms in an optical lattice collectively emit photons on an ultranarrow clock transition into the mode of a high Q resonator. The resultant optical radiation has an extremely narrow linewidth in the mHz range, even smaller than that of the clock transition itself due to collective effects.
D, Meiser, Jun, Ye, D R, Carlson, M J, Holland   +3 more
openaire   +2 more sources

Linewidth Reduction by Feedforward Locking a Laser Diode to a Femtosecond Comb Line

IEEE Photonics Journal, 2016
We propose and demonstrate a novel method to narrow the linewidth of a laser diode at 1550 nm by an electronics-assisted feedforward path and weak locking to a femtosecond comb line simultaneously.
Ziping Zhang, Yitang Dai, Pan Ou, Feifei Yin, Yue Zhou, Jianqiang Li, Kun Xu   +6 more
doaj   +1 more source

Extreme Narrowing of the Distributed Feedback Fiber Laser Linewidth Due to the Rayleigh Backscattering in a Single-Mode Fiber: Model and Experimental Test

Photonics, 2022
We present our theoretical model and experimental results on the extreme linewidth narrowing of an erbium-doped fiber distributed feedback (DFB) laser due to an additional random DFB via Rayleigh backscattering in a long single-mode fiber connected to ...
Mikhail I. Skvortsov, Sofia R. Abdullina, Evgeny V. Podivilov, Alexander A. Vlasov, Danil R. Kharasov, Edgard A. Fomiryakov, Sergey P. Nikitin, Vladimir N. Treshchikov, Sergey A. Babin   +8 more
doaj   +1 more source

Sub-kHz lasing of a CaF_2 Whispering Gallery Mode Resonator Stabilized Fiber Ring Laser

, 2012
We utilize a high quality calcium fluoride whispering-gallery-mode resonator to stabilize a simple erbium doped fiber ring laser with an emission frequency of 196 THz (wavelenght 1530 nm) to a linewidth below 650 Hz.
Alnis, B. Sprenger, Baaske, Barnes, Baumgartel, Chijioke, Conti, Dale, F. Sedlmeir, Fescenko, Grudinin, H. G. L. Schwefel, Kieu, Kieu, L. J. Wang, Lea, Lee, Li, Li, Liang, M. C. Collodo, Matsko, Numata, Premoli, Rubiola, S. Svitlov, Savchenkov, Sprenger, Sprenger, Vahala, Wang   +30 more
core   +1 more source

L-Band Erbium Fiber Laser with Tunable and Narrow Sub-kHz Linewidth Output

Applied Sciences, 2023
In this paper, a wavelength-selectable erbium-doped fiber (EDF) laser in L-band bandwidth with a simple structure and low cost is described. To obtain stable single-longitudinal-mode (SLM) and narrow laser linewidth, the 2 m unpumped EDF-based saturable ...
Lan-Yin Chen, Yu-Ting Lai, Chien-Hung Yeh, Chun-Yen Lin, Kuan-Ming Cheng, Jing-Heng Chen, Chi-Wai Chow   +6 more
doaj   +1 more source

Quantitative study of desctructive quantum interference effect on the linklin CPT [PDF]

, 2009
We investigate experimentally and theoretically the Coherent Population Trapping (CPT) effect occurring in 87Rb D1 line due to the interaction with linearly polarized laser light (lin||lin CPT).
Breschi, E., Kazakov, G., Lammegger, R., Matisov, B., Mileti, G., Windholz, L.   +5 more
core   +3 more sources