Results 31 to 40 of about 75,024 (299)

Spectroscopic applications and frequency locking of THz photomixing with distributed-Bragg-reflector diode lasers in low-temperature-grown GaAs [PDF]

open access: yes, 1997
A compact, narrow-linewidth, tunable source of THz radiation has been developed for spectroscopy and other high-resolution applications. Distributed-Bragg-reflector (DBR) diode lasers at 850 nm are used to pump a low-temperature-grown GaAs photomixer ...
Blake, Geoffrey A.   +7 more
core   +1 more source

25 kHz narrow spectral bandwidth of a wavelength tunable diode laser with a short waveguide-based external cavity [PDF]

open access: yes, 2012
We report on the spectral properties of a diode laser with a tunable external cavity in integrated optics. Even though the external cavity is short compared to other small-bandwidth external cavity lasers, the spectral bandwidth of this tunable laser is ...
C J Lee   +9 more
core   +9 more sources

High-Power Broadly Tunable 3- $\mu\hbox{m}$ Fiber Laser for the Measurement of Optical Fiber Loss

open access: yesIEEE Photonics Journal, 2015
We demonstrate a $\hbox{Ho}^{3+}$, $\hbox{Pr}^{3+} $ co-doped fluoride fiber laser that produces an output power of 7.2 W, a 150-nm tuning range, and a narrow linewidth of $<\ 0.14$ nm using a power-scalable $\hbox{Yb}^{3+} $ fiber-laser-pumped ...
Stephanie Crawford   +2 more
doaj   +1 more source

Spectral Evolution in Fiber Lasers With Soliton Self-Frequency Shift Effect

open access: yesIEEE Photonics Journal, 2021
The generation and evolution process of red shifting in a ultrafast fiber laser with the soliton self-frequency shift are investigated by numerical simulation.
Mengmeng Han   +3 more
doaj   +1 more source

Compact graphene mode-locked wavelength-tunable erbium-doped fiber lasers: from all anomalous dispersion towards all normal dispersion

open access: yes, 2010
Soliton operation and soliton wavelength tuning of erbium-doped fiber lasers mode locked with atomic layer graphene was experimentally investigated under various cavity dispersion conditions.
Akhmediev   +30 more
core   +1 more source

A novel two-section tunable discrete mode Fabry-PÉrot laser exhibiting nanosecond wavelength switching [PDF]

open access: yes, 2008
A novel widely tunable laser diode is proposed and demonstrated. Mode selection occurs by etching perturbing slots into the laser ridge. A two-section device is realized with different slot patterns in each section allowing Vernier tuning.
Barry, Liam P.   +11 more
core   +1 more source

Recent Advances in Tunable External Cavity Diode Lasers

open access: yesApplied Sciences
A narrow linewidth tunable laser source is a critical component in various fields, including laser radar, quantum information, coherent communication, and precise measurement. Tunable external cavity diode lasers (ECDLs) demonstrate excellent performance,
Yan Wang, Yue Song
doaj   +1 more source

All-optical adaptive control of quantum cascade random lasers

open access: yesNature Communications, 2020
Tunable quantum cascade lasers can enable applications in multiple areas. Here, the authors demonstrate the adaptive control of the modes and emission spectra of quantum cascade random lasers through a spatially-tailored optical modulation of the active ...
S. Schönhuber   +9 more
doaj   +1 more source

Temperature-Stabilized and Widely Tunable Vertical External Cavity Surface-Emitting Laser With a Simple Line Cavity

open access: yesIEEE Photonics Journal, 2022
We designed and demonstrated a temperature-stable, wide-tuned, high-power Vertical External Cavity Surface-emitting Laser (VECSEL) with a simple linear cavity.
Xiaolang Qiu   +6 more
doaj   +1 more source

Tailorable Stimulated Brillouin Scattering Laser Based on Silicon Ring Waveguides

open access: yesFrontiers in Physics, 2021
Stimulated Brillouin scattering (SBS) lasers based on silicon waveguides with large SBS gain, have been widely used in frequency tunable laser emission, mode-locked pulse laser, low-noise oscillator, optical gyroscope, and other fields.
Yulei Wang   +24 more
doaj   +1 more source

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