Results 151 to 160 of about 144,471 (205)

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

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 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

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

Widely tunable single-longitudinal-mode pulsed dye laser

Optics Letters, 1989
We have developed a simple cavity-length-stabilization method appropriate for single-longitudinal-mode pulsed lasers that use grazing-incidence gratings. Our technique relies on the detection of aminute (
T D, Raymond, P, Esherick, A V, Smith
openaire   +2 more sources

Single-longitudinal-mode, tunable, pulsed Ti:sapphire laser oscillator

Optics Letters, 1989
A 2.0-mJ/pulse, 2-nsec, single-longitudinal-mode Ti:sapphire laser oscillator has been demonstrated in a compact grazing-incidence cavity configuration similar to a Littman arrangement. The oscillator's output beam quality is TEM(00), making it attractive for doubling and mixing applications.
K W, Kangas, D D, Lowenthal, C H, Muller
openaire   +2 more sources

Tunable single-longitudinal-mode fiber optical parametric oscillator

Optics Letters, 2010
A tunable single-longitudinal-mode (SLM) fiber optical parametric oscillator (FOPO) is proposed and demonstrated experimentally. A sub-ring cavity with a short cavity length is used to suppress the longitudinal modes and broaden the longitudinal mode spacing.
Yang, S, Zhou, Y, Cheung, KKY, Wong, KKY
openaire   +4 more sources

Tunable, Single-Longitudinal Mode 2 μm VECSEL

Frontiers in Optics + Laser Science APS/DLS, 2019
A tunable, 2 μm, narrow linewidth vertical-external-cavity surface-emitting laser (VECSEL) is demonstrated. Single-longitudinal mode operation with sub-MHz linewidth is achieved over a tuning range of 80 nm.
Jennifer M. Reed, Robert G. Bedford
openaire   +1 more source

Pressure tuned single longitudinal mode dye laser

Optics Communications, 1987
Abstract The design and construction of a pressure tuned single longitudinal mode (SLM) dye oscillator is described. The oscillator had a pressure tuned range of ⩾ 3.75 cm −1 and a time average linewidth of 0.019 cm -1 . The output of the oscillator could be increased by four orders of magnitude in an amplifier chain which incorporated a phase ...
O.L. Bourne, D.M. Rayner
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