Results 281 to 290 of about 1,583,518 (339)

Selection for Function in Complex Distributed Pathological Systems. [PDF]

open access: yesEvol Appl
Thomas F   +9 more
europepmc   +1 more source

Helical distributed feedback Gaslaser

1983 Eighth International Conference on Infrared and Millimeter Waves, 1982
Theory, realization and mode characteristics of a helical distributed feedback far-ir gas laser are presented. In this laser DFB is provided by a structure of helical symmetry contrary to standard DFB lasers which are based on linear periodic modulations.
H.P. Preiswerk   +2 more
openaire   +1 more source

Multiply resonant distributed-feedback lasers

IEEE Journal of Quantum Electronics, 1976
In this paper, we propose, analyze, and experimentally demonstrate a new type of distributed feedback laser, the multiply-resonant distributed feed-back (MRDFB) laser. For active media having broad, partially- or fully-inhomogeneous gain lines, the MRDFB laser allows colinear lasing to occur simultaneously at several preselected wavelengths.
H. M. Stoll, D. H. Seib
openaire   +1 more source

Multicore fiber distributed feedback lasers

Optics Letters, 2012
We demonstrate parallel fabrication of seven fiber distributed feedback (DFB) lasers in a hexagonally arrayed multicore core Er doped fiber with 40 μm core spacing. DFB grating cavities 8 cm long and operating near 1545 nm were fabricated with a single UV inscription exposure.
P S, Westbrook   +6 more
openaire   +2 more sources

Raman fiber distributed feedback lasers

Optics Letters, 2011
We demonstrate fiber distributed feedback (DFB) lasers using Raman gain in two germanosilicate fibers. Our DFB cavities were 124 mm uniform fiber Bragg gratings with a π phase shift offset from the grating center. Our pump was at 1480 nm and the DFB lasers operated on a single longitudinal mode near 1584 nm.
Paul S, Westbrook   +4 more
openaire   +2 more sources

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