Results 21 to 30 of about 140,675 (264)

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

A Stabilized Single-Longitudinal-Mode and Wide Wavelength Tunability Erbium Laser

open access: yesPhotonics, 2022
An erbium-doped fiber (EDF) laser with quad-ring is designed to reach the broad continuous-wave (CW) tunability and single-longitudinal-mode (SLM) behavior.
Li-Ci Chen   +5 more
doaj   +1 more source

990 nm High-Power High-Beam-Quality DFB Laser With Narrow Linewidth Controlled by Gain-Coupled Effect

open access: yesIEEE Photonics Journal, 2019
High-power single-longitudinal-mode regrowth-free gain-coupled distributed feedback laser diode based on ridge waveguide with periodic current injection is achieved at 990 nm. Our device is fabricated only by standard i-line lithography with micron-scale
Yu-Xin Lei   +14 more
doaj   +1 more source

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

Single-Longitudinal-Mode Thulium-Doped Fiber Laser With Sub-kHz Linewidth Based on a Triple-Coupler Double-Ring Cavity

open access: yesIEEE Access, 2022
We propose and demonstrate a stable single-longitudinal mode (SLM) thulium-doped fiber laser (TDFL) with a Fabry- Pérot (F-P) fiber Bragg grating (FBG) filter and a triple-coupler based double-ring cavity (TC-DRC) filter.
Ting Li   +9 more
doaj   +1 more source

Single-longitudinal-mode optical parametric oscillator for spectroscopic applications [PDF]

open access: yesOptics Letters, 2002
We have developed a tunable, narrow-bandwidth nanosecond optical parametric oscillator system and applied it to spectroscopic studies. The system consists of a narrow-bandwidth grazing-incidence oscillator and a seeded power oscillator, generating Fourier-transform-limited 1.5-ns pulses (bandwidth
Mes, J., Leblans, M.J.R., Hogervorst, W.
openaire   +3 more sources

Sub-kHz Narrow-Linewidth Single-Longitudinal-Mode Thulium-Doped Fiber Laser Utilizing Triple-Coupler Ring-Based Compound-Cavity Filter

open access: yesPhotonics, 2023
This paper proposes and demonstrates a single-longitudinal-mode thulium-doped fiber laser using a passive triple-coupler ring-based compound-cavity filter (TCR-CC) and a uniform fiber Bragg grating. For the first time, the TCR-CC filter is used to select
Biao Guan   +8 more
doaj   +1 more source

Development of Single-Longitudinal-Mode Selection Technology for Solid-State Lasers

open access: yesInternational Journal of Optics, 2021
Lasers with narrow linewidths and single frequencies are widely used in fields such as radar detection, nonlinear optics, and precision measurements.
Xuanpu Zhang   +7 more
doaj   +1 more source

Stable and Tunable PT-Symmetric Single-Longitudinal-Mode Fiber Laser Using a Nonreciprocal Sagnac Loop

open access: yesIEEE Access, 2023
A stable and tunable parity-time (PT) symmetric single-longitudinal-mode fiber laser using a nonreciprocal Sagnac loop is proposed, which is experimentally and numerically demonstrated. The nonreciprocal Sagnac loop only including a 3-dB optical coupler (
Liuyuan Tao   +3 more
doaj   +1 more source

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