With its recent breakthrough in terms of output power, the erbium 3m fiber laser has become an object of intense scientific research and an increasingly attractive tool for medical applications. This paper reviews the research on the erbium 3m fiber laser since its first demonstration. Its development is seen in relationship to the early success of the corresponding crystal laser system, to the...

BACKGROUND 28-43% of the patients develop posterior capsular thickening after extra capsular cataract surgery. Nd-YAG laser capsulatomy is a method of choice to treat this complication. METHOD We conducted a prospective clinical, randomized comparative study to evaluate the post YAG laser IOP rise in 54 patients at Ayub Teaching Hospital Complex. RESULT There were 43% male and 57% female pa...

Temporal compressions of optical pulses and pulse trains have been performed by the photon-echo process in Tm-doped YAG at 793 nm. Single-pulse temporal compression by almost a factor of 500 from 10 micros to 22 ns and pulse train compression by a factor of 14 from 5micros to 350 ns with a high-speed frequency-tunable external-cavity diode laser are demonstrated. It is suspected that significan...

Soft tissue laser, such as diode and Nd:YAG lasers were initially used in soft tissue lesions because of its increased success rate. It was because of the fact that these lasers were well-absorbed by chromophores, such as hemoglobin and melanin which are found abundant in the oral mucosa. The introduction of erbium family in 1990 comprising the Er:YAG and Er,Cr:YSGG lasers made the hard tissue ...

PURPOSE THE AIM OF THIS STUDY WAS TO DETERMINE THE EFFICIENCY OF ERBIUM, CHROMIUM: Yttrium-Scandium-Gallium-Garnet laser in different output powers for removing permanent resin cement residues and therefore its influence on microshear bond strength compared to other cleaning methods. MATERIALS AND METHODS 90 extracted human molars were sectioned in 1 mm thickness. Resin cement was applied to ...

introduction: surgical management of pediatric urinary calculi evolved dramatically over the past two decades. however, with the miniaturization of equipment and with improvisation of endourologic techniques, access to the entire pediatric urinary system is possible. ho: yag laser provides more maneuverability during transuretereal lithotripsy (tul) than the pneumatic system which uses a metal ...

The influence of energy-transfer upconversion (ETU) between neighboring ions in the upper and lower laser levels of erbium 3m continuous-wave lasers on heat generation and thermal lensing is investigated. It is shown that the multiphonon relaxations following each ETU process generate significant heat dissipation in the crystal. This undesired effect is an unavoidable consequence of the efficie...