There is an increasing demand for high-intensity subnanosecond lasers for emerging industrial applications. While femtosecond and picosecond laser sources are considered promising, they suffer from the significant drawbacks of increased complexity and cost. In this regard, we demonstrate a unique edge-pumped passively Q-switched Nd∶YAG∕Cr4þ∶YAG microchip laser. The microchip is made of a Nd∶YAG...

a 1 ZHANG, L., CHANDLER, P. I., TOWNSENO, P. D., and THOMAS, P. A.: ‘Helium ion implanted optical waveguide in KTiOPO,’, Electron. Lett., 1992, 28, pp. 650-652 Liu, YS., OENTZ, o., and BELT, R.: ‘High-average-power intercavity 2nd-harmonic generation using KTiOPO, in an acousto-optically Q-switched Nd-YAG laser oscillator at 5 KHz’, Opt. Lett., 1984, 9, pp. 76-78 VANHERZEELE, H., BIEXLEIN, 1. D...

Here, we report the case of a patient who sustained Nd: YAG laser macular injury with subsequent 6 year follow-up evaluation. A 23-year-old female was accidentally exposed to a Q-switched Nd: YAG laser without protective goggles. Upon initial evaluation, the best-corrected visual acuity of her affected eye was 20/100 OD. Fundoscopic examination revealed a macular laser burn and vitreous hemorrh...

In this paper, the problems of control and stabilization of switched nonlinear cascade systems is investigated. The so called simultaneous domination limitation (SDL) is introduced in previous works to assure the existence of a common quadratic Lyapunov function (CQLF) for switched nonlinear cascade systems. According to this idea, if all subsystems of a switched system satisfy the SDL, a CQLF ...

This study uses the optical emission spectroscopy (OES) technique to find lead(Pb) and sulfur (S) plasma parameters employing a pulse of Nd: YAG laser (Q-switched 1064nm wavelength) different energies (400,500,600 700 mJ). The electron temperature Te (eV) is calculated using Boltzmann-Plot method, density ne (cm-3)is determined by Stark broadened way. Moreover, Debye length ?D (cm) frequency ?p...

Here, we demonstrate the fabrication of a stable polymer optical fibre doped with 1,4-bis (2-methylstyryl) benzene (Bis-MSB) that contains silver nanoparticles. Spherical nanoparticles approximate size 15 nm were fabricated using nanosecond laser ablation. A Q-switched Nd: YAG operating at 355 was used to pump fiber in order analyse its emission characteristics. The pulse energy (PPE) dependent...

BACKGROUND Nepalese population with Fitzpatrick skin types III-V has high prevalence of pigmentary disorders and it is a growing cosmetic concern. Q-Switched Neodymium- Doped Yttrium Aluminum Garnet (QS Nd-YAG) laser is an efficacious tool in the treatment of pigment disorders. OBJECTIVE To highlight the efficacy and safety profile of various pigment disorders. METHODS A prospective study d...

This dissertation presents a study of injection seeding in Nd:YLF Q-switched oscillators for the purposes of producing single axial mode output. The objective was to develop a prototype system and determine the limiting factors which dictate successful injection seeding. The laser system consisted of a laser diode pumped monolithic miniature Nd:YLF master oscillator which seeded a conventional ...