In this work, Laser-induced plasma technique (LIPS) has employed to generate plasma in air at atmospheric pressure from a carbon sample by using a passively Q-switched Nd:YAG laser (334.7mJ, 1064 nm with 9 ns pulse duration, 37MW peak power ,the area of the laser spot was 5.72*10P P cmP P and 6.4*10P PMw/cmP P the power intensity). optical spectrum analyzer with 150 pm optical resolution for sp...

Melanic pigmentation results from melanin produced by the melanocytes present in the basal layer of the oral epithelium. One of the most common causes of oral pigmentation is smoker melanosis, a condition associated with the melanocyte stimulation caused by cigarette smoke. This paper aims to illustrate the use of a carbon dioxide laser in the removal of the gingival melanic pigmentation for ae...

OBJECTIVE To evaluate the long-term effectiveness of, and the complications associated with, carbon dioxide laser treatment of rhytidosis and solar aging. METHODS This retrospective report describes our experience with 47 patients who underwent entire facial carbon dioxide laser resurfacing. RESULTS The mean improvement in facial rhytid score at long-term follow-up was 45%. This improvement...

Uncontrolled trials indicate that treatment of condylomata acuminata with the carbon dioxide laser is effective and probably superior to conventional surgical treatment. We performed a controlled study of refractory condylomata acuminata to clarify whether this is the case. In this randomised trial 21 patients were treated with the carbon dioxide laser and 22 by conventional surgery after havin...

introduction: the purpose of this study was to investigate the effect of 6w power carbon dioxide laser (co2) on the biologic compatibility of the sandblasting with large grit and acid etching (sla) titanium discs through studying of the sarcoma osteogenic (saos-2) human osteoblast-like cells viability. methods: sterilized titanium discs were used together with saos-2 human osteoblast-like cells...

We exploit the strong plasmon resonance of gold nanoparticles in the catalytic decomposition of CO to grow various forms of carbonaceous materials. Irradiating gold nanoparticles in a CO environment at their plasmon resonant frequency generates high temperatures and strong electric fields required to break the CO bond. By varying the laser power, exposure time, and gas flow rate, we deposit amo...

A frequency comb generated by a 167 MHz repetition frequency erbium-doped fiber ring laser using a carbon nanotube saturable absorber is phase-stabilized for the first time. Measurements of the in-loop phase noise show an integrated phase error on the carrier envelope offset frequency of 0.35 radians. The carbon nanotube fiber laser comb is compared with a CW laser near 1533 nm stabilized to th...

We demonstrate experimentally new families of vector solitons with locked and precessing states of polarization for fundamental and multipulse soliton operations in a carbon nanotube mode-locked fiber laser with anomalous dispersion laser cavity.

OBJECTIVE To evaluate the possibility of disease transmission through liberated plume from virally infected tissue that is exposed to the carbon dioxide laser. DESIGN Bovine papillomavirus-induced cutaneous fibropapillomas were exposed to the carbon dioxide laser. Laser settings were within the range of clinically used settings. The laser plume (aerosol) was suctioned and collected and then r...

introduction: providing desirable smile is one of the main concerns in cosmetic dentistry. hyperpigmentation is one of the esthetic concerns especially in gummy smile patients. lasers with different wavelength are used for oral surgery including carbon dioxide laser (co2), neodymium-doped yttrium aluminium garnet (nd:yag), erbium family and diode laser. in this case, all esthetic procedures inc...