Volume gratings and welding of glass/plastic by femtosecond laser direct writing

Wataru Watanabe

doi:10.1117/12.2282889

2 January 2018 Volume gratings and welding of glass/plastic by femtosecond laser direct writing

Wataru Watanabe

Proceedings Volume 10456, Nanophotonics Australasia 2017; 104562L (2018) https://doi.org/10.1117/12.2282889
Event: SPIE Nanophotonics Australasia, 2017, Melbourne, Australia

Abstract

Femtosecond laser direct writing is used to fabricate diffractive optical elements in three dimensions and to weld glass and/or plastic. In this paper, we review volume gratings in plastics and welding of glass/plastic by femtosecond laser direct writing. Volume gratings were embedded inside polymethyl methacrylate (PMMA) by femtosecond laser pulses. The diffraction efficiency of the gratings increased after fabrication and reached the maximum. After an initial slow decrease within first several days after the fabrication, the efficiency increased again. This phenomena was called regeneration of the grating. We also demonstrate welding of PMMA by dendrite pattern using femtosecond laser pulses. Laser pulses are focused at the interface of two PMMA substrates with an air gap and melted materials in laser-irradiated region spread within a gap of the substrates and dendrite morphology of melted PMMA was observed outside the laser irradiated area. Finally, we show welding of glass/plastic and metal.

Citation Download Citation

Wataru Watanabe "Volume gratings and welding of glass/plastic by femtosecond laser direct writing", Proc. SPIE 10456, Nanophotonics Australasia 2017, 104562L (2 January 2018); https://doi.org/10.1117/12.2282889

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available