Abstract
The miniaturization of optical components claims for new methods for assembling e.g. micro lenses on integrated optical circuits or sealing of OLEDs in order to improve productivity and quality. Welding of glass for micro-technological application is still a field of research, because scaling-down the welding seam into the micrometer scale implicates also sub-micrometer heat-affected zones [1]. The localized melting in the volume and the welding of borosilicate and quarz glasses by ultrafast laser radiation (λ = 1045 nm, IMRA, μJewel D-1000) with femtosecond pulse durations has been investigated. A wide range of further applications like the writing of waveguides [2] and the micro-structuring by material modification and subsequent etching [3] is based on the same initial processes. The non-linear absorption of the fs-laser radiation, localized melting and the fast cooling of the material are the basic processes for all these techniques. Compression and expansion of material lead to refractive index changes as well as local differences in the temperature.
© 2009 IEEE
PDF ArticleMore Like This
I. Mingareev, D. Wortmann, A. Brand, and A. Horn
CThP2 Conference on Lasers and Electro-Optics (CLEO:S&I) 2009
Jens Gottmann, Dagmar Esser, and Maren Hörstmann-Jungemann
CM_P10 The European Conference on Lasers and Electro-Optics (CLEO/Europe) 2009
Pang Ming, Tan Jian-Song, Wang Jian-Ping, Wu Bo, and Jie Zhi-Min
TUP13_12 Conference on Lasers and Electro-Optics/Pacific Rim (CLEO/PR) 2009