Interactions of carriers, phonons, and point defects during direct femtosecond laser writing of waveguides in bulk dielectrics

Sergey I. Kudryashov

doi:10.1117/12.585128

21 February 2005 Interactions of carriers, phonons, and point defects during direct femtosecond laser writing of waveguides in bulk dielectrics

Sergey I. Kudryashov

Author Affiliations +

Proceedings Volume 5647, Laser-Induced Damage in Optical Materials: 2004; (2005) https://doi.org/10.1117/12.585128
Event: Boulder Damage Symposium XXXVI, 2004, Boulder, Colorado, United States

Abstract

Phenomenological model of photo-elastic effect in bulk dielectrics damaged by femtosecond laser radiation in the regime of direct laser-writing of waveguides is proposed. Positive and negative changes of refraction index due to densification and stretching in laser-written damage tracks inside silica glasses and fluorite, respectively, are explained in terms of laser-induced point defect generation. This model predicts spatial narrowing or broadening of such tracks in silica glass and fluorite bulk samples, respectively, related to spatial point defect distribution due to interactions of carriers with long-wavelength optical and acoustic vibrations as well as due to interactions of point defects with longwavelength acoustic vibrations. Direct laser writing of perspective different contrast microstructures with lower-index boundaries in fluorite and other dielectrics is discussed.

Citation Download Citation

Sergey I. Kudryashov "Interactions of carriers, phonons, and point defects during direct femtosecond laser writing of waveguides in bulk dielectrics", Proc. SPIE 5647, Laser-Induced Damage in Optical Materials: 2004, (21 February 2005); https://doi.org/10.1117/12.585128

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