Results 31 to 40 of about 4,005,529 (300)

A Single-Longitudinal-Mode S + C Band Wavelength-Tunable Fiber Laser

open access: yesSensors
An external cavity wavelength-fiber ring laser (ECWTFL) based on a semiconductor optical amplifier and a combined wavelength scanning filter in the Littrow configuration is proposed and experimentally demonstrated.
Da Liu, Yi Jiang
doaj   +1 more source

Thermodynamics of a single mesoscopic phononic mode

open access: yesPhysical Review Research, 2023
In recent decades, the laws of thermodynamics have been pushed down to smaller and smaller scales, within the theoretical field of stochastic thermodynamics and state-of-the-art experiments performed on microfabricated mesoscopic systems.
Ilya Golokolenov   +7 more
doaj   +1 more source

Measurement of Coupling PDC photon sources with single-mode and multimode optical fibers

open access: yes, 2004
We investigate the coupling efficiency of parametric downconversion light (PDC) into single and multi-mode optical fibers as a function of the pump beam diameter, crystal length and walk-off.
Castelletto, Stefania   +4 more
core   +2 more sources

Room temperature continuous wave operation of single-mode, edge-emitting photonic crystal Bragg lasers [PDF]

open access: yes, 2008
We report the first room temperature CW operation of two dimensional single-mode edge-emitting photonic crystal Bragg lasers. Single-mode lasing with single-lobed, diffraction limited far-fields is obtained for 100μm wide and 550μm long on-chip devices ...
DeRose, Guy A.   +4 more
core   +2 more sources

Comparative study of the effective single mode operational bandwidth in sub-wavelength optical wires and conventional single-mode fibers [PDF]

open access: yes, 2009
We present the first experimental comparison of effective single mode operation bandwidth in sub-wavelength optical wires (SOWs) and conventional single-mode fibers (SMFs).
Brambilla, Gilberto   +2 more
core   +1 more source

Single mode, extreme precision Doppler spectrographs

open access: yes, 2012
The 'holy grail' of exoplanet research today is the detection of an earth-like planet: a rocky planet in the habitable zone around a main-sequence star.
Betters, Christopher H.   +4 more
core   +1 more source

Single-Mode Fiber Microlens with Controllable Spot Size [PDF]

open access: yes, 1991
A novel method for fabricating microlenses on tapered single-mode fibers is shown to be able to control the lens spot size. The fiber cladding is first symmetrically tapered by etching it with an evaporating ammonium bifluoride solution.
Barnard, Chris W., Lit, John W.Y.
core   +2 more sources

Single-mode squeezing in arbitrary spatial modes

open access: yesOptics Express, 2016
As the generation of squeezed states of light has become a standard technique in laboratories, attention is increasingly directed towards adapting the optical parameters of squeezed beams to the specific requirements of individual applications. It is known that imaging, metrology, and quantum information may benefit from using squeezed light with a ...
Semmler, M.   +7 more
openaire   +4 more sources

High-fidelity delivery of kilowatt-level single-mode lasers through a tapered multimode fiber over one hundred meters

open access: yesHigh Power Laser Science and Engineering
The immediate priorities for high-power delivery employing solid-core fibers are balancing the nonlinear effect and beam deterioration. Here, the scheme of tapered multimode fiber is experimentally realized. The tapered multimode fiber, featuring a 15 m (
Xiao Chen   +6 more
doaj   +1 more source

Single mode levitation and translation [PDF]

open access: yes, 1988
A single frequency resonance mode is applied by a transducer to acoustically levitate an object within a chamber. This process allows smooth movement of the object and suppression of unwanted levitation modes that would urge the object to a different ...
Allen, James L., Barmatz, Martin B.
core   +1 more source

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