title: Gap bridging in joining of glass using ultra short laser pulses.
abstract: Glass welding by ultra-short laser pulses provides hermetic welding seams with high mechanical stability. The required distance between the samples must be extremely small (<100nm), otherwise cracks will form inside the seam reducing its stability. However, to achieve such small gaps the roughness of the samples must be small enough necessitating additional polishing. Additionally, Van-der-Waals forces grow substantial at such distances thereby effectively preventing sample movement and an easy and precise sample alignment. Here we present a method utilizing ultra-short laser pulses which exploits a volume expansion of irradiated glass enabling the joining of glass plates across gaps of up to 1µm.
authors.forename: Kristian
authors.initials: K
authors.lastname: Cvecek
authors.forename: Rainer
authors.initials: R
authors.lastname: Odato
authors.forename: Sarah
authors.initials: S
authors.lastname: Dehmel
authors.forename: Isamu
authors.initials: I
authors.lastname: Miyamoto
authors.forename: Michael
authors.initials: M
authors.lastname: Schmidt