Enhanced formation of nanogratings inside fused silica due to the generation of self-trapped excitons induced by femtosecond laser pulses

Sören Richter; Fei Jia; Matthias Heinrich; Sven Döring; Stefan Nolte; Andreas Tünnermann

doi:10.1117/12.908500

30 January 2012 Enhanced formation of nanogratings inside fused silica due to the generation of self-trapped excitons induced by femtosecond laser pulses

Sören Richter, Fei Jia, Matthias Heinrich, Sven Döring, Stefan Nolte, Andreas Tünnermann

Author Affiliations +

Proceedings Volume 8247, Frontiers in Ultrafast Optics: Biomedical, Scientific, and Industrial Applications XII; 82470N (2012) https://doi.org/10.1117/12.908500
Event: SPIE LASE, 2012, San Francisco, California, United States

Abstract

To gain insight into the processes mediating the cumulative action of subsequent laser pulses which gives rise to the formation of nanogratings, we performed double pulse experiments with femtosecond laser pulses with a delay time ranging from 0.5 ps to 1 ns. We determined the polarisation contrast intensity of the inscribed lines as a measure for the birefringent strength of the nanogratings. Our experiments show an enhanced nanograting formation for pulse separations below 500 ps. We attribute this to the presence of self trapped excitons serving as transient material memory enhancing the impact of the second pulse. In contrast, nanograting formation at pulse separation times up to several seconds is being mediated by dangling bond type defects as evidenced by spectrally resolved absorption measurements.

Citation Download Citation

Sören Richter, Fei Jia, Matthias Heinrich, Sven Döring, Stefan Nolte, and Andreas Tünnermann "Enhanced formation of nanogratings inside fused silica due to the generation of self-trapped excitons induced by femtosecond laser pulses", Proc. SPIE 8247, Frontiers in Ultrafast Optics: Biomedical, Scientific, and Industrial Applications XII, 82470N (30 January 2012); https://doi.org/10.1117/12.908500

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