Results 231 to 240 of about 20,078 (253)

Ultra-narrow-linewidth Brillouin/Erbium Fiber Laser

Conference on Lasers and Electro-Optics, 2017
Ultra-narrow-linewidth lasers are of great interest in many applications, such as precise spectroscopy, optical communications, and sensors. Stimulated Brillouin scattering (SBS), as one of the main nonlinear effects in fibers, is capable of generating narrow-linewidth light emission. We establish a compact Brillouin/erbium fiber laser (BEFL) utilizing
Mo Chen, Zhou Meng, Hong Luo, Jianfei Wang, Chenyu Wang   +4 more
openaire   +1 more source

Narrow-linewidth quantum cascade laser at 86  μm

Optics Letters, 2014
We report on a narrow-linewidth distributed-feedback quantum cascade laser at 8.6 μm that is optical-feedback locked to a high-finesse V-shaped cavity. The spectral purity of the quantum cascade laser is fully characterized using a high-sensitivity optical frequency discriminator, leading to a 1 ms linewidth of less than 4 kHz and a minimum laser ...
Eugenio Fasci, COLUCCELLI, NICOLA, CASSINERIO, MARCO, GAMBETTA, ALESSIO, Laurent Hilico, Livio Gianfrani, LAPORTA, PAOLO, Antonio Castrillo, Gianluca Galzerano   +8 more
openaire   +5 more sources

High power, narrow linewidth fiber amplifiers

Optical Amplifiers and Their Applications/Coherent Optical Technologies and Applications, 2006
Amplification of narrow linewidth signals in optical fibers is limited by stimulated Brillouin scattering (SBS). We discuss novel fiber designs that limit SBS allowing the amplification of narrow linewidth signals to kilowatt power levels.
Stuart Gray, Donnell Walton, Ji Wang, Ming-Jun Li, Xin Chen, A. Boh Ruffin, Jeffrey Demeritt, Luis Zenteno   +7 more
openaire   +1 more source

Narrow-Linewidth Lasers on a Silicon Chip

2014
Diode-pumped distributed-feedback (DFB) channel waveguide lasers were demonstrated in Er3+-doped and Yb3+-doped Al2O3 on standard thermally ox-idized silicon substrates. Uniform surface-relief Bragg gratings were patterned by laser-interference lithography and etched into the SiO2 top cladding. The maxi-mum grating reflectivity exceeded 99%. Monolithic
Bernhardi, Edward, Pollnau, Markus
openaire   +1 more source

High power, narrow linewidth fiber lasers

SPIE Proceedings, 2006
Single transverse mode fiber lasers have recently achieved output powers at the kilowatt level. These breakthroughs can be attributed to the maturation of high power diode pump technology at 980 nm and the use of large mode area (LMA) fibers. In the continous wave (cw) operation regime, LMA fibers, through their reduction of device length and increase ...
Donnell Walton, Stuart Gray, Ji Wang, Ming-Jun Li, Xin Chen, A. B. Ruffin, Jeffrey Demeritt, Luis Zenteno   +7 more
openaire   +1 more source

Narrow linewidth, tunable distributed feedback photodetector

Applied Physics Letters, 1996
We demonstrate a photodetector with a narrow spectral linewidth (approximately 2 Å) and a useful electrical-tuning range of 35 Å. The photodetector features a horizontal resonant cavity in which feedback is achieved using distributed feedback reflectors. The optical and electrical paths in this photodetector are orthogonal.
J. Sarathy, K. A. Anselm, B. G. Streetman, J. C. Campbell   +3 more
openaire   +1 more source

Narrow-linewidth external-cavity tunable lasers

10th International Conference on Optical Communications and Networks (ICOCN 2011), 2011
This paper reports our recent work on narrow-linewidth tunable laser, which utilizes two etalons in the external cavity to obtain linewidth 60 dB and fiber-coupled output power > 20 mW. (2 pages)
X.M. Zhang, N. Wang, L. Gao, M. Feng, B. Chen, Y.H. Tsang, A.Q. Liu   +6 more
openaire   +1 more source

Narrow linewidth ultraviolet semiconductor disk laser

2013 Conference on Lasers & Electro-Optics Europe & International Quantum Electronics Conference CLEO EUROPE/IQEC, 2013
Here we combine active stabilisation of an AlGaInP-based red semiconductor disk laser (SDL) with intracavity frequency doubling in the same cavity in order to achieve narrow linewidth,
Paboeuf, David, Schlosser, Peter, Hastie, Jennifer   +2 more
openaire   +1 more source

Compact narrow linewidth semiconductor laser module

SPIE Proceedings, 2009
Frequency noise reduction of semiconductor lasers using electrical feedback from an optical frequency discriminator is an efficient and simple approach to realize narrow linewidth lasers. These lasers are of great interest for applications such as LIDAR, RF photonics and interferometric sensing.
M. Poulin, S. Ayotte, C. Latrasse, Y. Painchaud, J. F. Cliche, A. Babin, M. Aubé, M. Picard, F. Costin, M. Têtu, G. Lafrance   +10 more
openaire   +1 more source

Miniature narrow-linewidth 1 μm laser

Applied Physics Letters
A self-injection locking scheme has the potential to narrow the linewidth of lasers in a compact setup. Here, we report a narrow linewidth laser source near 1 μm by the self-injection locking scheme using a Fabry–Pérot (FP) hollow resonator with a high-quality factor (Q > 108).
Xiaofan Zhang, Fan Zhang, Kunpeng Jia, Yunfeng Liu, Haosen Shi, Yanyi Jiang, Xiaoshun Jiang, Longsheng Ma, Wei Liang, Zhenda Xie, Shi-ning Zhu   +10 more
openaire   +1 more source