An optically triggered liquid crystal infiltrated Q-switched photonic crystal laser is demonstrated. A photonic crystal laser cavity was designed and fabricated to support two orthogonally polarized high-Q cavity modes after liquid crystal infiltration. By controlling the liquid crystal orientation via a layer of photoaddressable polymer and a writing laser, the photonic crystal lasing mode can...

Solid-state lasers pumped by high-power two-dimensional arrays of vertical-cavity surface-emitting lasers (VCSELs) were investigated. Both end-pumping and side-pumping schemes of Nd:YAG lasers with high power kW-class 808 nm VCSEL pump modules were implemented. For one application 10 mJ blue laser pulses were obtained from a frequencydoubled actively Q-switched VCSEL-array dual side-pumped Nd:Y...

Vol. 26, No. 6, 2014 785 Received September 5, 2013, Revised January 18, 2014, Accepted for publication February 1, 2014 Corresponding author: Tae Yoon Kim, Department of Dermatology, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, 222 Banpo-daero, Seocho-gu, Seoul 137-701, Korea. Tel: 82-2-2258-1380, Fax: 82-2-599-9950, E-mail: [email protected] This is ...

Abstract We present several strategies for increasing the output laser power of near-diffraction limited continuous-wave Alexandrite lasers pumped by fibre-coupled red diodes. Laser mode size control using a convex mirror with varying thermal lens is shown to be an efficient method generating record levels from diode-pumped laser. 8.6 W obtained $$M^{2}&lt;1.1$$ <mml:math xmlns:mml="http://www....

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 ...

INTRODUCTION Picosecond lasers have been reported to be effective for removal of tattoo pigment. This prospective study evaluated the efficacy and safety of the treatment of peri-oral and -ocular wrinkles using a novel diffractive lens array coupled with a picosecond 755 nm alexandrite laser. METHODS Forty female subjects presenting with wrinkles from photodamage were enrolled in an IRB appro...

BACKGROUND Acne scarring is treatable by a variety of modalities. Ablative carbon dioxide laser (ACL), while effective, is associated with undesirable side effect profiles. Newer modalities using the principles of fractional photothermolysis (FP) produce modest results than traditional carbon dioxide (CO(2)) lasers but with fewer side effects. A novel ablative CO(2) laser device use a technique...

Prior work with free-electron lasers (FELs) showed that wavelengths in the 6- to 7-µm range could ablate soft tissues efficiently with little collateral damage; however, FELs proved too costly and too complex for widespread surgical use. Several alternative 6- to 7-µm laser systems have demonstrated the ability to cut soft tissues cleanly, but at rates that were much too low for surgical applic...