Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Structural modification of transparent materials with band gap by laser radiation at the absorption edge

Not Accessible

Your library or personal account may give you access

Abstract

The problem of control over the process of structural modification of transparent materials by laser radiation is currently of great practical interest. This work proposes a novel method of controllable modification of a material structure, using laser pulses with wavelength at the material fundamental absorption edge. The method is based on the effect of thermal shift of the semiconductor absorption edge. The structure is modified by local heating of the material with laser pulses focused inside a transparent semiconductor. The laser heating process is investigated numerically and experimentally in order to determine the conditions under which the preset increase in temperature occurs in the local material area. As clarified, the heating is a threshold process and can be of two spatial structures: spot-like and line-like. The proposed method provides temperature changes in a large range, and therefore can be used for different structural modifications. It has multiple applications in practical tasks such as the optical recording of information, the formation of various photonic or other microstructures with complicated topology inside transparent materials, and the dividing of semiconductor wafers into chips.

© 2019 Optical Society of America

Full Article  |  PDF Article
More Like This
Ultrashort pulsed fiber laser welding and sealing of transparent materials

Huan Huang, Lih-Mei Yang, and Jian Liu
Appl. Opt. 51(15) 2979-2986 (2012)

Thermal management of a semiconductor laser array based on a graphite heat sink

Junyu Fang, He Zhang, Yonggang Zou, Linlin Shi, Weiyan Li, Yingtian Xu, Liang Jin, Yan Li, Li Xu, and Xiaohui Ma
Appl. Opt. 58(28) 7708-7715 (2019)

Evaluation of nonlinear absorptivity in internal modification of bulk glass by ultrashort laser pulses

Isamu Miyamoto, Kristian Cvecek, and Michael Schmidt
Opt. Express 19(11) 10714-10727 (2011)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (10)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (19)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved