pulsed laser vaporization source

Improved pulsed laser vaporization source for production of intense ..- pulsed laser vaporization source ,We describe an improved laser vaporization source for production of intense and stable cluster beams.. Intensity and stability are notably improved compared with standard sources by the introduction of a cavity in which the vaporization takes place before expansion.. This source has been successfully used for electric deflection studies of highly collimated cluster beams..Pulsed Laser Vaporization and Deposition - ResearchGateThis method uses a pulsed laser with a high pulse energy to ablate atoms from a source [26][27] [28] [29][30], and it can result in less contamination [31,32], a lower pressure rise at the trap ..



An efficient laser vaporization source for chemically modified metal ..

A laser vaporization cluster source that has a room for cluster aggregation and a reactor volume, each equipped with a pulsed valve, is presented for the efficient gas-phase production of chemically modified metal clusters.. The performance of the cluster source is evaluated through the production of Ta and Ta oxide cluster cations, Ta x O y + (y

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Pulsed laser deposition - Wikipedia

Pulsed laser deposition (PLD) is a physical vapor deposition (PVD) technique where a high-power pulsed laser beam is focused inside a vacuum chamber to strike a target of the material that is to be deposited.. This material is vaporized from the target (in a plasma plume) which deposits it as a thin film on a substrate (such as a silicon wafer facing the target)..

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Improved pulsed laser vaporization source for production of intense ..

The U..S.. Department of Energy's Office of Scientific and Technical Information

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Depth of vaporization and the effect of pulse stacking with a high ..

There is a direct linear increase in the depth of thermal necrosis both with the number of pulses stacked and the number of passes.. CONCLUSION: Pulsed carbon dioxide laser resurfacing is a safe and self-limited procedure if a pulse width of less than 1 msec is used with single-pulse vaporization and fluences of 3..5 J/cm2 and 7..0 J/cm2..

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Improved Signal Stability from a Laser Vaporization Source with a ..

A laser vaporization source uses a laser to vaporize a solid target into a flowing buffer gas.. The advantage of this approach is that only a small area of the target is heated by the pulsed laser, avoiding all the complications associated with a high temperature oven.. During the laser pulse, the vaporized material forms a plasma, which is then ..

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Rev.. Mod.. Phys.. 72, 315 (2000) - Pulsed laser vaporization and deposition

Photons have many advantages for vaporizing condensed systems, and laser vaporization sources have a flexibility not available with other methods.. These sources are applied to making thin films in the well-known technique of pulsed laser deposition (PLD).. The vaporized material may be further processed through a pulsed secondary gas, lending the source additional degrees of freedom.. Such ..

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Improved Signal Stability from a Laser Vaporization Source with a ..

A laser vaporization source uses a laser to vaporize a solid target into a flowing buffer gas.. The advantage of this approach is that only a small area of the target is heated by the pulsed laser, avoiding all the complications associated with a high temperature oven.. During the laser pulse, the vaporized material forms a plasma, which is then ..

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Laser ablation - Wikipedia

Laser ablation or photoablation (also called laser blasting) is the process of removing material from a solid (or occasionally liquid) surface by irradiating it with a laser beam.. At low laser flux, the material is heated by the absorbed laser energy and evaporates or sublimates..At high laser flux, the material is typically converted to a plasma..Usually, laser ablation refers to removing ..

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Pulsed laser deposition - Wikipedia

Pulsed laser deposition (PLD) is a physical vapor deposition (PVD) technique where a high-power pulsed laser beam is focused inside a vacuum chamber to strike a target of the material that is to be deposited.. This material is vaporized from the target (in a plasma plume) which deposits it as a thin film on a substrate (such as a silicon wafer facing the target)..

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Improved signal stability from a laser vaporization source with a ..

The laser beam strikes a near pristine surface with each pulse … The translating and rotating rod or disk of a conventional laser vaporization cluster source is replaced by a liquid metal target.. The self-regenerating liquid surface prevents cavities from being bored into the sample by laser ablation..

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Quasi-CW fiber Lasers Source - Superwave Laser Technology Co..,Ltd

IPG’s Quasi-CW Ytterbium Laser Systems deliver peak power in excess of 20 kW with pulse energies over 200 J.. They can be operated in either continuous wave or adjustable pulsed mode (0..2-50 ms) at repetition rates up to 5 kHz, providing up to 10 times higher peak power in the pulsed over CW mode.. The flexibility of peak power makes them ..

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Pulsed laser vaporization and deposition - NASA/ADS

Photons have many advantages for vaporizing condensed systems, and laser vaporization sources have a flexibility not available with other methods.. These sources are applied to making thin films in the well-known technique of pulsed laser deposition (PLD).. The vaporized material may be further processed through a pulsed secondary gas, lending the source additional degrees of freedom.. Such ..

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Yttrium Oxide Clusters Using Pulsed Laser Vaporization

is injected through 0..8 mm-diam.. nozzle in the laser ablation source.. The yttrium oxide target is ablated at laser energies of 1-10 mJ/pulse by a laser beam (532 nm, SHG ofNd:YAG laser) directed perpendicularly to the carrier gas.. The laser beam is focused by an f= 100 cm lens on the surface of a

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Improved pulsed laser vaporization source for production of intense ..

We describe an improved laser vaporization source for production of intense and stable cluster beams.. Intensity and stability are notably improved compared with standard sources by the introduction of a cavity in which the vaporization takes place before expansion.. This source has been successfully used for electric deflection studies of highly collimated cluster beams..

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Pulsed Laser Welding - IntechOpen

parameters like laser power and welding speed are simply entered into the welding device control system pursuant to the material thickness and physical properties.. Much more complicated setting of pulsed laser parameters is outlined in paragraph 2..1.. Surface power density or laser beam intensity is defined as a portion of laser power and

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An efficient laser vaporization source for chemically modified metal ..

A laser vaporization cluster source that has a room for cluster aggregation and a reactor volume, each equipped with a pulsed valve, is presented for the efficient gas-phase production of chemically modified metal clusters.. The performance of the cluster source is evaluated through the production of Ta and Ta oxide cluster cations, Ta x O y + (y

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Pulsed laser deposition of thin films of functional materials

Pulsed laser deposition of thin films of functional materials .. laser major parts Gain medium Pump source 1) The pump source provides energy to the gain medium.. .. •Pulsed mode provides non-equilibrium vaporization (10000 K in 10 nm surface layer).. 19 Advantages •versatile method (any material) •congruent evaporation

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The role of lasers and intense pulsed light technology in dermatology

It was first popularized in the mid-1990s following the introduction of the pulsed carbon dioxide (CO 2) laser system for the treatment of facial rhytides and atrophic acne scars.. 130 The 10,600 nm wavelength emitted by a CO 2 laser is absorbed by intracellular water, resulting in tissue heating and vaporization.. The pulsed CO 2 laser produces ..

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Laser ablation - Wikipedia

Laser ablation or photoablation (also called laser blasting) is the process of removing material from a solid (or occasionally liquid) surface by irradiating it with a laser beam.. At low laser flux, the material is heated by the absorbed laser energy and evaporates or sublimates..At high laser flux, the material is typically converted to a plasma..Usually, laser ablation refers to removing ..

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Laser-pulse-vaporization of refractory materials

congruency of vaporization, meaning that the composition of the vapor is equal to that of the solid, is critical.. Finally, laser vaporization(or ablation) is the basis of a commercial ion source for mass spectrometric analysis of solids .. Laser heating can also be used as a convenient surface heat source for fundamental studies that simulate

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Invited Review Article: Laser vaporization cluster sources

The laser vaporization cluster source has been used for the production of gas phase atomic clusters and metal-molecular complexes for 30 years.. Numerous experiments in the chemistry and physics of clusters have employed this source.. Its operation is simple in principle, but there are many subtle design features that influence the number and size of clusters produced, as well as their ..

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A pulsed ion source for the preparation of metal containing cluster ..

33 Briefly, Co or Ni vapor was created by laser vaporization of a rotating metal (Co or Ni) disc with the third harmonic of a pulsed Nd:YAG laser (355 nm).. The metal vapor is then entrained in a ..

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Pulsed Vaporization Sources for High Efficiency .. - Scientific..Net

Pulsed Vaporization Sources for High Efficiency Prouduction of Metal Clusters .. Arc-Discharge, Laser Vaporization, Metal Cluster, Molecular Beams, Pulsed Source.. Export: RIS, BibTeX.. Price: Permissions: Request Permissions Share: References ..

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Improved pulsed laser vaporization source for production of intense ..

The U..S.. Department of Energy's Office of Scientific and Technical Information

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