Results 11 to 20 of about 80,318 (305)

Ultrashort Q-switched pulses from a passively mode-locked distributed Bragg reflector semiconductor laser [PDF]

, 2012
A compact semiconductor mode-locked laser (MLL) is presented that demonstrates strong passive Q-switched mode-locking over a wide range of drive conditions.
Cheung, Flynn, G. Mezösi, Heck, Huttl, Lu, Marc Sorel, Marco Zanola, Michael J. Strain, Stolarz, Strain, Thompson, Thompson   +12 more
core   +1 more source

Effects of Q-switched Nd: YAG laser irradiation on the aqueous solution of human albumin and calf-thymus double strand DNA (ctds)

Iraqi Journal of Physics, 2019
Q-switched lasers widely used in management skin diseases and sometimes its effect may be inadequate or associated with cytotoxicity. The current study aimed to investigate the effect of Q-switched Nd:YAG laser upon cellular elements using in vitro ...
Nida Hassan Ali
doaj   +1 more source

High-fluence 1064nm Q-switched Nd:YAG laser treatment for ectopic Mongolian spot

Journal of Dermatological Treatment, 2023
Q-switched neodymium-yttrium aluminum-garnet (Q-switched Nd:YAG) laser has been reported as an effective treatment for nevus of Ota and acquired bilateral nevus of Ota-like macules (ABNOM). Data on ectopic Mongolian spots have rarely been reported.
Jun-Oh Shin, Dongyoung Roh, Kihyuk Shin, Hoon-Soo Kim, Byung-Soo Kim, Moon-Bum Kim, Hyun-Chang Ko   +6 more
doaj   +1 more source

Nd:YAG Lasers Treating of Carious Lesion and Root Canal In Vitro

International Journal of Photoenergy, 2012
Dental caries is a transmissible bacterial disease process, with cavities at the end, and caused by acids from bacterial metabolism. The essence of dental treatment is to clean and disinfect bacterial contamination from the tooth.
Danqing Xia, Zenggui Mo, Gang Zhao, Fei Guo, Chao You, Ze Chen, Xiao Zhu, Zhengjia Li, Di Chen, Xiaohong Fan   +9 more
doaj   +1 more source

Broadband Tunable Passively Q-Switched Erbium-Doped ZBLAN Fiber Laser Using Fe₃O₄-Nanoparticle Saturable Absorber

Applied Sciences, 2022
We experimentally demonstrate a passively Q-switched wavelength tunable 2.8 μm erbium-doped fiber laser. Fe3O4 nanoparticles deposited on a gold mirror are used as a saturable absorber (SA).
Kaidi Cai, Xin Zhang, Xi Wang, Cunzhu Tong, Lijun Wang   +4 more
doaj   +1 more source

Computation and Verification of Spatial Rate Equations for an Electro-Optically Q-Switched Laser-Diode Side-Pumped Nd:YAG Laser

Applied Sciences, 2023
In a side-pumped laser module, we simulate the pumping power distribution across the cross-section of Nd:YAG rods at varying diameters. The coupled rate equations with the spatial overlap efficiency for a four-level actively Q-switched side-pumped laser ...
Renpeng Yan, Haobo Xu, Xudong Li
doaj   +1 more source

Switchable Dual-Wavelength Synchronously Q-Switched Erbium-Doped Fiber Laser Based on Graphene Saturable Absorber

IEEE Photonics Journal, 2012
We demonstrate a switchable dual-wavelength synchronously pulsed fiber laser Q-switched by graphene saturable absorber. Wavelength-resolved studies on the output Q-switched pulses show that despite of large wavelength spacing up to 26 nm, the two Q ...
Z. T. Wang, Y. Chen, C. J. Zhao, H. Zhang, S. C. Wen   +4 more
doaj   +1 more source

Optically-pumped saturable absorber for fast switching between continuous-wave and passively mode-locked regimes of a Nd:YVO4 laser [PDF]

, 2009
We report on the fast (~50 μs) remote-controlled switching between continuous-wave (cw), cw mode-locked (ML) and Q-switched ML modes of operation of a Nd:YVO4 laser using an optically-pumped saturable absorber (SA).
Agate, Burns, D. Burns, Giet, Guina, Hais, Hempler, Hönninger, Kemp, McWilliam, S. Calvez, Seitz, Stevenson, V. G. Savitski   +13 more
core   +1 more source

Q switching by self-focusing [PDF]

Optics Letters, 1985
A novel passive technique for obtaining short-laser-pulse emission is presented. A cell with a high-second-order refractive-index liquid is included in an unstable laser cavity. The external self-focusing introduced by the cell at higher optical intensities reduces the diffraction losses, producing modulation of the gain and Q switching of the cavity ...
M C, Marconi, O E, Martinez, F P, Diodati   +2 more
openaire   +2 more sources

Generation of tunable q-switched erbium-doped fiber laser based on graphite flakes saturable absorber [PDF]

, 2020
Pulsed fiber laser has tremendous application in laser processing and laser sensor. The key element to produce a passively Q-switched fiber laser is by using a saturable absorber (SA).
Nik Mahmud, Nik Noor Haryatul Eleena
core