Background: The aim of the study was to compare functional and structural outcomes of treatment for retinopathy of prematurity with diode laser photocoagulation and cryotherapy. Materials and methods: We examined 111 children aged 4 years, treated for retinopathy of prematurity by transpupillary diode laser photocoagulation or cryotherapy. Both functional (visual acuity, orthoptic status) and s...

Aim: In this study, we aimed to evaluate the effects of four different photoactive dyes on dentin adhesion an epoxy resin-based root canal sealer.Methods: Sixty maxillary central incisors were used. Root canals prepared up size Reciproc #40, and 2.5 mL 5% NaOCl was used between each file. The teeth divided into six groups: Group 1, distilled water (the control group); 2, methylene blue; 3, tolu...

Earlobe piercing is a common office room procedure done by a plastic surgeon. Various methods of ear piercing have been described. In this article, we describe a novel method of laser ear piercing using the diode laser. An 18-year-old female patient underwent an ear piercing using a diode laser with a power of 2.0 W in continuous mode after topical local anaesthetic and pre-cooling. The diode l...

introduction: deep periodontal pockets pose a great challenge for nonsurgical periodontal treatment. scaling and root planing (srp) alone may not suffice in cases where surgical therapy cannot be undertaken. various recent studies have suggested the use of antimicrobial photodynamic therapy (apdt) for the management of periodontal infections. the aim of this study was to evaluate the effects of...

introduction: laser tissue soldering is a new technique for repair of various tissues including the skin, liver, articular cartilage and nerves and is a promising alternative to suture. to overcome the problems of thermal damage to surrounding tissues and low laser penetration depth, some exogenous chromophores such as gold nanoshells, a new class of nanoparticles consisting of a dielectric cor...

A laser-isotope-separation study of lithium has been performed with two-step excitation involving UV laser radiation and a visible tunable-diode laser. The method yields a high degree of selectivity by tuning the narrow-linewidth diode laser to the D1 or D2 levels of the lithium atom. Selective laser excitation is simplified by the use of the tunable diode laser and the overall approach benefit...

Reconfigurable photonic technology combining multiple functionalities in a single gain-chip is crucial light-based platform for enabling hybrid applications. Here, we report on achieving widely tunable and reconfigurable blue laser source using single-port gain medium based an InGaN/GaN superluminescent diode (SLD). As compared to laser-diode emitters solely stimulated emission from used as the...

Atomic ion traps offer a promising architecture for scalable quantum information processing. External cavity diode lasers yield stable output frequency and narrow spectral bandwidth by exploiting the sensitivity of diode lasers to external optical feedback. This project aims to design and develop a high-coherence external cavity diode laser used to depopulate Yb171+ from the undesirable 2F7/2 o...

We report on kilohertz-repetition-rate flame temperature measurements performed using blue diode lasers. Two-line atomic fluorescence was performed by using diode lasers emitting at around 410 and 451 nm to probe seeded atomic indium. At a repetition rate of 3.5 kHz our technique offers a precision of 1.5% at 2000 K in laminar methane/air flames. The spatial resolution is better than 150 microm...