Part of the experimental measurements of the frequency shift and the phase-conjugation (PC) fidelity gained from previous studies of stimulated scattering (SS) of nanosecond ( 5 ~ 10 ns ) near-ultraviolet (UV) ( 193 ~ 351 nm λ = ) laser pulses in liquids (hexane, heptane, and others) are found to disagree with the theory of SS, which takes into account only the linear (single-photon) light abso...

An open photoacoustic detector system, consisting of a high Q cylindrical resonator (Q factor in Nz % 800) and two adjoining variable acoustic filter systems, was tested for pulsed excitation of acoustical modes in a naphthalenelair gas mix by using a 308 nm excimer laser. The outside noise suppression and the signal-to-noise ratio were investigated in a normal laboratory environment in the flo...

The body image of the Turin Shroud has not yet been explained by traditional science; so a great interest in a possible mechanism of image formation still exists. We present preliminary results of excimer laser irradiation (wavelength of 308 nm) of a raw linen fabric and of a linen cloth. The permanent coloration of both linens is a threshold effect of the laser beam intensity, and it can be ac...

This paper reviews the potential role of excimer lasers in corneal surgery. The morphology of incisions induced by two wavelengths of excimer laser radiation, 193 nm and 248 nm, are compared with the morphology of incisions produced by diamond and steel knives. Analysis suggests that ablation induced by excimer laser results from highly localised photochemical reactions and that 193 nm is the o...

BACKGROUND Psoriasis of the scalp can be a major therapeutic challenge as response to topical medication is often inadequate. The excimer laser has potential for providing local phototherapy as its high irradiance makes treatment at this site a practical option. OBJECTIVES To analyze retrospectively results of treating scalp psoriasis with the excimer (308 nm) laser. METHODS Thirty-five pat...

L ichen planopilaris (LPP) is a difficult-to-treat, chronic, inflammatory autoimmune disease targeting the hair follicle that eventually leads to permanent irreversible scarring alopecia. It commonly affects adult women on the central scalp with multifocal patches, perifollicular erythema, hyperkeratosis, and subjective complaints like pruritus or pain. Recently, a deficiency of the peroxisome ...

The present series of experiments used gas chromatography to identify vapor-phase photoproducts liberated during excimer laser irradiation of cardiovascular tissues in air and blood. In air, laser beams produced from ArF (193 nm) and XeF (351 nm) excimer laser gas mixtures were delivered to samples of myocardium and atherosclerotic coronary arterial segments through the wall of a quartz cell, u...