Q-switched laser systems
Distributed optical fibre sensing at 1 65µm using a Q switched fibre laser
... In this section, a Raman distributed temperature sensor (DTS) system operating at the wavelength of 1.65µm is described. Optical fibre temperature sensors based on spontaneous Raman scattering at the wavelength region of ...
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Status Of Laser Technology In India
... photon-correlator, laser ablation system, real-time spectroscopy system, excimer lasers, liquid helium closed cycle cryogenic systems, vibration-free platforms and argon laser for holographic work, ...
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Generation of Q-switched thulium-doped fiber laser (TDFL) using differentsaturable absorbers
... demonstrated Q-switched TDFL as functions of pump ...fiber laser systems are all intensity-dependent, therefore the output power is increasing directly proportional to the pump ...the ...
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Q-switched laser as a source for Thomson scattering from a hollow cathode arc.
... Passive Q-switch systems offer the advantage of no moving parts or critical alignment problems and no ex ternal fields. Once the giant pulse begins it is not cut off as in the case of some rotating mirror ...
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Numerical Study of Transient Temperature Distribution in Passively Q Switched Yb:YAG Solid State Laser
... passive Q-switching lasers has been developed to quantitatively describe the temperature distribution in both axial and radial ...coupled laser rate equations using fourth order Runge-Kutta method in ...
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Tunable Yb:KGW laser, CW or Q-switched, enabled by dual-axis tilt of a MOEMS mirror : KGW laser, CW or Q-switched, enabled by dual-axis tilt of a MOEMS mirror
... The laser output power in this work was intentionally lim- ited to 5 mW average power to avoid thermal failure of the MOEMS device in both CW and Q-switched ...
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Diode laser pumped, high repetition rate, Nd:YLF laser and its frequency conversion
... er Q-switched condition s. This disadvantage und er Q-switched operation turns into an advantage if this tran sition is used in a m ode l ocked lase r ...both systems is at the time no ...
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Ytterbium doped and co-doped Q-switched fiber lasers utilizing passive saturable absorbers
... solid-state laser systems is the fiber laser with some advantages like compact size, high electrical efficiency, superior beam quality and reliability, great output power, lower maintenance, low ...
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Study of saturable absorber materials for Q-switching dye laser
... Acousto-optic Q-switches, which employ materials such as quartz that exhibit a change in the index of refraction when the material is acoustically excited have the advantages of being low-loss elements when not ...
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Q-switched Nd:YAG laser induced photodisruption in an eye model
... ruby laser for iris and retinal photocoagulation in rabbits. Delivery systems for retinal photocoagulation employing ruby laser had been developed by Campbell and Koester as well as Zweng and his ...
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Vol 30, No 1 (2020)
... various laser systems. As melanin has a broad absorption spectrum, Q- switched Nd:YAG, ruby and alexandrite lasers have all been evaluated for the treatment of such ...lesions. ...
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Revealing the nature of morphological changes in carbon nanotube polymer saturable absorber under high power laser irradiation
... This study aims to unfix all of the traditional notions and extend the understanding of the thermal degradation and damage threshold of a conventional ferrule-type SAs, sandwiching a thin polymeric film containing ...
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Alloying of aluminium surface with Q-switched Nd:YAG laser
... a Q-switched Nd:YAG laser with a fundamental wavelength of 1064 nm and pulse duration of 10 ns was employed as a source of ...The laser was focused by a biconvex lens with focal length of 10 ...
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Beam spot of Q-switched ND: YAG laser based on raster graphic
... The previous speculation was confirmed by investigating various operation voltage of the flashlamp power supply. The typical results obtained from these experiments are depicted in Figure 4. The beam spots are arranged ...
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Simulation of Diode Pumped Q Switched Nd:YAG Laser Generating Eye Safe Signal in IOPO Environment
... passively Q-switched diode- pumped Nd-doped lasers has been investigated experi- mentally and high-energy pulses with mJ range energy have been ...optimized Q-switched pulse energy at 1047 nm ...
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Thermal distribution and response in Q-switched ruby laser treatment for oculodermal melanosis (Nevus of Ota)
... of laser illumination, the heat convection effect is not apparent, and can be ...including laser illumination on the skin surface, the difference between Boundary Conditions and Initial Conditions should be ...
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The surface roughness of copper when focused with a Q-switched Nd:YAG laser analyzed using AFM
... the laser energy focused at frequency 3 Hz have a spiky surface as Rku > ...with laser energy focused at frequency 1Hz and 2Hz have a bumpy surface as Rku < ...when laser energy is focused at ...
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Re-crystallization of metallized silicon wafer with copper film by Q-switched Nd : YAG laser
... The annealing process can be performed in short time. It is a low temperature processing technique because during the fast heating and cooling cycle the bulk substrate material is essentially unaffected. Pulsed ...
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Effect of Q switched laser surface texturing of titanium on osteoblast cell response
... Laser surface treatment has previously been shown to affect cell response (Walboomers, Croes et al. 1999). Elongation of fibroblasts in the direction of machined grooves has been reported (Walboomers, Croes et al. ...
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C Band Q Switched Fiber Laser Using Titanium Dioxide (TiO 2) As Saturable Absorber
... ferrules. Q-switched pulsing starts with the assistance of physical disturbance of the laser cavity (by lightly tapping the cavity to induce instability) at 140 mW and lasts until 240 ...The ...
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