Results 191 to 200 of about 7,974,201 (245)

Transverse-mode selection in single-longitudinal-mode lasers

Physical Review A, 1996
In this paper we analyze the transverse pattern-forming characteristics of a two-level and single-longitudinalmode laser. The corrections to the classical empty cavity modes due to pumping and losses are specifically considered, leading to different excitation rates for the different transverse modes.
, Calderón, , Pérez-García, , Martín, , Guerra   +3 more
openaire   +2 more sources

Longitudinal Field Modes Probed by Single Molecules

Physical Review Letters, 2001
Physical Review ...
L, Novotny, M R, Beversluis, K S, Youngworth, T G, Brown   +3 more
openaire   +2 more sources

Comparison Between Single-Longitudinal-Mode and Two-Longitudinal-Mode Pumping Cavity OPSMMWL

International Journal of Infrared and Millimeter Waves, 2002
A CO2 infrared laser system with a etalon to be the longitudinal mode select equipment was set up to be the optically pump source, as well as a mini NH3 with 20cm long sample tube to be the sub-millimeter wave laser. CO2-9R(16) line was chose to pump the mini-NH3 SMMW laser, and 90.4um SMMW line was obtained by single-longtudinal-mode or two ...
null Huang Xiao, null Bao Yanxiang, null Luo Xizhang, null Zou Xiaorong   +3 more
openaire   +1 more source

Single-longitudinal-mode ring diamond Raman laser

2017 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC), 2017
We demonstrate a single-longitudinal-mode ring diamond Raman laser, pumped by a tunable single-mode Ti:sapphire laser. Two methods to achieving unidirectional operation have been demonstrated: increasing gain for one direction using a reinjecting mirror and increasing loss for one direction using sum frequency mixing in BBO.
Ondrej, Kitzler, Jipeng, Lin, Helen M, Pask, Richard P, Mildren, Stephen C, Webster, Nils, Hempler, Graeme P A, Malcolm, David J, Spence   +7 more
openaire   +2 more sources

Single-longitudinal-mode lasing of Ho:Tm:YAG at 2091 μm

Applied Optics, 1989
This Communication demonstrates that single-longitudinal-mode operation of Ho:Tm:YAG at 2.091 Am using a laser diode pumped, monolithic crystal.
M E, Storm, W W, Rohrbach
openaire   +2 more sources

Single-longitudinal-mode broadband tunable random laser

Optics Letters, 2017
In this work, we demonstrate a broadband tunable single-longitudinal-mode (SLM) random laser based on Rayleigh backscattering in a standard single-mode fiber. The wide tuning range of this SLM fiber laser over 1500-1570 nm is demonstrated with a linewidth of 4.5-30 kHz.
Heba, Shawki, Hussein, Kotb, Diaa, Khalil   +2 more
openaire   +2 more sources

Spectrum of single bunch longitudinal dipole modes

Physical Review E, 1998
A mode of coherent longitudinal dipole motion of the beam in the National Synchrotron Light Source (NSLS) vacuum ultraviolet (vuv) ring with small frequency is observed by Biscardi {ital et al.} [Rev. Sci. Instrum. {bold 66}, 1856 (1995)]. We point out in this paper that the coherent motion observed is, although a solution to the well-known secular ...
Nathan Towne, Jiunn-Ming Wang
openaire   +1 more source

Single Longitudinal Mode Green Diode Laser

Frontiers in Optics 2016, 2016
We observed that a green diode laser shows single longitudinal mode output at low operation current, and its frequency can be tuned by adjusting the operation temperature and operational current. The behavior of laser modes with operational current was also investaigated.
Yi-Hsi Chen, Wei-Chen Lin, Jow-Tsong Shy, Hsiang-Chen Chui   +3 more
openaire   +1 more source

Single longitudinal mode operation of diode lasers

Applied Physics Letters, 1977
We report single longitudinal mode operation of conventional double-heterostructure GaAs/GaAlAs diode lasers achieved by heavy p-type doping of the active region. At 77 °K a broad-area device pumped with a rectangular current pulse exhibited single longitudinal mode operation up to 2.8 times threshold, which was the limit of the pulser.
D. R. Scifres, R. D. Burnham, W. Streifer   +2 more
openaire   +1 more source

Single longitudinal mode operation of an XeCl laser

Applied Physics Letters, 1984
Single longitudinal mode output from a directly tuned, long pulse, magnetically switched XeCl laser is reported for the first time. Mode control was achieved using spatial aperatures and intracavity etalons. The narrow bandwidth laser output was diffraction limited with an optical pulse width of 30 ns, which would yield a transform limited bandwidth of
Thomas J. Pacala, I. Stuart McDermid, James B. Laudenslager   +2 more
openaire   +1 more source