Search results for " Laser pulses"

showing 3 items of 3 documents

Interference Effects in Photodetachment of F- in a Strong Circularly Polarized Laser Pulse

2007

A numerical simulation of photodetachment of F{sup -} by a circularly polarized laser pulse has been accomplished by using a Keldysh-type approach. The numerical results are in agreement with measurements of photoelectron energy spectra recently reported in the literature. The features exhibited by the spectra are traced back to quantum interference effects, in the same spirit as in a double-slit experiment in the time doma0008.

PhysicsComputer simulationComputer simulation Laser pulses Measurement theory Numerical methods Time domain analysisNumerical analysisInterference (wave propagation)LaserAtomic and Molecular Physics and OpticsSpectral lineSettore FIS/03 - Fisica Della MateriaPulse (physics)law.inventionX-ray photoelectron spectroscopylawPhysics::Atomic PhysicsAtomic physicsEnergy (signal processing)
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Non-linear interactions of femtosecond laser pulses with graphene : photo-oxidation, imaging and photodynamics

2017

This thesis presents a study focused on interactions of femtosecond laser pulses with graphene, a one atom thick carbon membrane. Graphene, which exhibits exceptional electronic and optoelectronic properties, could provide considerable advantage over current silicon-based electronics. Graphene alone, being semi-metal, is not sufficient for electronic applications, but requires modification. For this, a set of methods for modifying and measuring the properties of graphene was developed. With the perspective of making graphene a suitable component for electronics, optoelectronics or photonics, ultrashort laser pulses were used for drawing patterns on graphene. The procedure modifies graphene …

femtosecond laser pulseshapetussäteilytysgraphenespektroskopianon-linear interactionsgrafeenioksidiCARS spectroscopygraphene laser patterninglasersäteilyphoto-oxidationnon-linear opticsRaman spectroscopygrafeenicarbon based electronicsvalokemia
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Chronic neuropathic facial pain after intense pulsed light hair removal. Clinical features and pharmacological management

2015

Intense Pulsed Light (IPL) photodepilation is usually performed as a hair removal method. The treatment is recommended to be indicated by a physician, depending on each patient and on its characteristics. However, the use of laser devices by medical laypersons is frequent and it can suppose a risk of damage for the patients. Most side effects associated to IPL photodepilation are transient, minimal and disappear without sequelae. However, permanent side effects can occur. Some of the complications are laser related but many of them are caused by an operator error or mismanagement. In this work, we report a clinical case of a patient that developed a chronic neuropathic facial pain following…

Orofacial pain- TMJDmedicine.medical_specialtyDolor facialmedicine.medical_treatmentPharmacological managementFacial painCase ReportChronic painOdontologíaIntense pulsed lightUltrashort laser pulsesLàsers d'impulsos ultracurtsHair removalMedicineFacial painGeneral Dentistrybusiness.industryUpper lipUnwanted hair:CIENCIAS MÉDICAS [UNESCO]DermatologyDolor crònicCiencias de la saludSurgeryUNESCO::CIENCIAS MÉDICASClinical casesense organsbusinessPulse light
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