Results 111 to 120 of about 7,518 (151)

Narrow linewidth single frequency microfiber laser

Optics Letters, 2012
A compact 2 kHz linewidth single frequency microfiber ring laser is demonstrated. Microfiber, with a diameter of 1.88 μm, which is drawn from an Er(3+)/Yb(3+) co-doped phosphate glass fiber, serves as the gain medium. By using this microfiber, a double-knot resonator with a total length of 1.75 mm is constructed.
Wei, Fan, Jiulin, Gan, Zhishen, Zhang, Xiaoming, Wei, Shanhui, Xu, Zhongmin, Yang   +5 more
openaire   +2 more sources

Dual-wavelength Narrow-linewidth Lasers and Their Applications

Advanced Solid-State Lasers Congress, 2013
Our recent work on distributed-feedback, narrow-linewidth channel waveguide lasers in Er3+- and Yb3+-doped Al2O3 layers deposited on silicon microchips is reviewed.
Pollnau, Markus, Bernhardi, Edward, Worhoff, Kerstin, de Ridder, R.M.   +3 more
openaire   +2 more sources

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

Modulatable narrow-linewidth semiconductor lasers

Applied Physics Letters, 1988
We find that using the technique of optical feedback locking, to narrow semiconductor linewidths, does not sacrifice the ability to modulate the laser’s frequency via the injection current. The frequency of a laser is stabilized to a separate Fabry–Perot reference cavity using resonant optical feedback and can be modulated efficiently at frequencies ...
L. Hollberg, M. Ohtsu
openaire   +1 more source

Integrated-optic, narrow-linewidth laser

Applied Physics Letters, 1986
We report the demonstration of the single-frequency and narrow-linewidth (<100 kHz) operation of an extended cavity laser consisting of a Ti:LiNbO3 single-mode waveguide circuit and an InGaAsP waveguide gain medium. A parallel coupled cavity, electro-optic elements for tuning the resonant frequencies of the cavities, and an external phase ...
S. K. Korotky, E. A. J. Marcatili, G. Eisenstein, J. J. Veselka, F. Heismann, R. C. Alferness   +5 more
openaire   +1 more source

Narrow Linewidth Lasers for Low-Energy Coherent Communications

Optical Fiber Communication Conference (OFC) 2022, 2022
We present chip-scale lasers with ~1Hz fundamental linewidths, ~30Hz integral linewidths, and stability better than 2x10-13 (50ms) enabling energy-efficient, ultra-low residual phase error carrier recovery for DSP-free, high-capacity coherent communications in tomorrow’s data center interconnects.
Grant M. Brodnik, Mark W. Harrington, John H. Dallyn, Debapam Bose, Wei Zhang, Liron Stern, Paul A. Morton, Ryan A. Behunin, Scott B. Papp, Daniel J. Blumenthal   +9 more
openaire   +2 more sources

CMOS photodiodes for narrow linewidth applications

2011 IEEE SENSORS Proceedings, 2011
In recent years CMOS image sensors have gained a major market share for general imaging applications. However, when standard CMOS image sensors are employed in applications that require the detection of light with a very small spectral width, like 3D-time-of-flight imaging or other applications with laser light illumination, problems arise, that are ...
Hochschulz, Frank, Dreiner, Stefan, Vogt, Holger, Paschen, Uwe   +3 more
openaire   +2 more sources

Wavelength-tunable narrow-linewidth gaseous Raman laser

Applied Optics, 2021
Gaseous Raman lasers cover a range of wavelengths but lack wavelength tunability. Here, a 1 c m − 1 linewidth 532 nm laser was used as a pump laser, and with a narrow-linewidth seed laser injection, a narrow-linewidth first Stokes (S1) Raman ...
Chencheng Shen, Xianglong Cai, Xinjun Su, Tiancheng Zheng, Jinbo Liu, Ying Chen, Yuxi Jia, Dong Liu, Jingwei Guo   +8 more
openaire   +2 more sources

Tunable fiber laser with narrow linewidth

2016 Photonics North (PN), 2016
We demonstrate a narrow linewidth tunable fiber laser based on a tunable fiber Bragg grating, a linear or ring cavity fiber laser and a piece of non-pumped active fiber setup.
Pin Long, Saju Thomas
openaire   +1 more source

Narrow linewidth UV sources at 257nm

SPIE Proceedings, 2017
We describe and compare the performance of two types of compact, passively Q-switched Yb:YAG 1030nm lasers and their use for 257nm fourth harmonic generation (FHG). In the first implementation, an end-pumped Yb:YAG laser produced a 250μJ pulse train with an average power at 1030nm of 3.6W. Using a 10mm LBO crystal (70% doubling efficiency), followed by
Brian Cole, Lew Goldberg, Chris McIntosh, Vernon King, Alan Hays   +4 more
openaire   +1 more source