Results 31 to 40 of about 638,812 (341)

Low-loss criterion and effective area considerations for photonic crystal fibers [PDF]

open access: yes, 2003
We study the class of endlessly single-mode all-silica photonic crystal fibers with a triangular air-hole cladding. We consider the sensibility to longitudinal nonuniformities and the consequences and limitations for realizing low-loss large-mode area ...
Agrawal G P   +21 more
core   +2 more sources

Narrow-Strip Single-Longitudinal-Mode Laser Based on Periodic Anodes Defined by i-Line Lithography

open access: yesIEEE Photonics Journal, 2018
A low-cost regrowth-free narrow-strip single-longitudinal-mode diode laser, based on periodic anodes defined only by i-line lithography is proposed. With the periodic anodes separated by surface insulated grooves acting as a 44th-order gain grating, a ...
Feng Gao   +11 more
doaj   +1 more source

An Injection-Locked Single-Longitudinal-Mode Fiber Ring Laser With Cylindrical Vector Beam Emission

open access: yesIEEE Photonics Journal, 2017
We demonstrate a fiber ring laser with narrow bandwidth single-longitudinal-mode cylindrical vector beam (CVB) output at C-band wavelength range for the first time to the best of our knowledge.
Hongdan Wan   +6 more
doaj   +1 more source

Unstable resonator cavity semiconductor lasers [PDF]

open access: yes, 1985
GaAs heterostructure lasers with unstable resonator cavities were demonstrated for the first time with both curved mirrors fabricated by etching. Typical output powers of 0.35 W were observed in a stable, highly coherent lateral mode.
Lang, R.   +4 more
core   +1 more source

Highly efficient, tunable single photon source based on single molecules [PDF]

open access: yes, 2007
The authors studied spatially isolated terrylene molecules immobilized in a quasiplanar optical λ/2-microresonator using confocal microscopy and spectroscopy at variable temperatures.
Achim Hartschuh   +6 more
core   +2 more sources

Trapping and observing single atoms in the dark [PDF]

open access: yes, 2007
A single atom strongly coupled to a cavity mode is stored by three-dimensional confinement in blue-detuned cavity modes of different longitudinal and transverse order. The vanishing light intensity at the trap center reduces the light shift of all atomic
A. Grothe   +7 more
core   +2 more sources

Compound Cavity Passively Q-Switched Single-Longitudinal-Mode Diode-Pumped Laser

open access: yesFrontiers in Physics, 2022
A compact solid-state single-longitudinal-mode (SLM) Q-switched laser based on a compound cavity is demonstrated. SLM operation is achieved through the enhancement of mode competition (via manipulation of the effective reflectivity of the resonator ...
Bin Chen   +18 more
doaj   +1 more source

Longitudinal mode spectrum of GaAs injection lasers under high-frequency microwave modulation [PDF]

open access: yes, 1983
Experimental observations of the lasing spectrum of a single mode semiconductor laser under continuous microwave modulation reveal that the lasing spectrum is apparently locked to a single longitudinal mode for optical modulation depths up to ~80 ...
Harder, Ch., Lau, K. Y., Yariv, A.
core   +1 more source

Broadband tunability of gain-flattened quantum well semiconductor lasers with an external grating [PDF]

open access: yes, 1989
Quantum well lasers are shown to exhibit flattened broadband gain spectra at a particular pumping condition. The gain requirement for a grating-tuned external cavity configuration is examined and applied to a semiconductor quantum well laser with an ...
Mehuys, David   +4 more
core   +1 more source

Single-Longitudinal-Mode Dual Wavelength-Switchable Fiber Laser Based on Superposed Fiber Bragg Gratings

open access: yesIEEE Photonics Journal, 2015
In this work, a simple switchable dual-wavelength short-cavity fiber laser operating in a single-longitudinal-mode regime at room temperature and based on superposed fiber Bragg gratings is proposed and experimentally demonstrated.
R. A. Perez-Herrera   +4 more
doaj   +1 more source

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