Reversible dark-center diffraction of metal film in micromachining

Jin Xie; Changhe Zhou

doi:10.1117/12.830897

21 May 2009 Reversible dark-center diffraction of metal film in micromachining

Jin Xie, Changhe Zhou

Proceedings Volume 7282, 4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies; 728223 (2009) https://doi.org/10.1117/12.830897
Event: AOMATT 2008 - 4th International Symposium on Advanced Optical Manufacturing, 2008, Chengdu, Chengdu, China

Abstract

When we utilized femtosecond laser to micromachine Cr film with glass substrate, we found reversible dark-center diffraction of the transmitted probe beam passing through the chromium film and reversible bright-center diffraction of the reflected probe beam from the chromium film, which are induced by the pump femtosecond laser. The dark-center diffraction of the transmitted probe beam and the bright-center diffraction of the reflected probe beam appear and disappear with and without the pump beam. A view of diffractive optics with binary phase plate is put forward, which explains the reversible dark-center diffractive optical phenomenon. The pre-ablated hole on the metal film can be regarded as a uniform light filed without phase modulation, the surrounding circular part around the pre-ablated hole can be regarded as "phase modulated". Therefore, this diffraction optic view might be helpful for us to understand the phase change of the metal film introduced by the femtosecond laser pulse.

Citation Download Citation

Jin Xie and Changhe Zhou "Reversible dark-center diffraction of metal film in micromachining", Proc. SPIE 7282, 4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies, 728223 (21 May 2009); https://doi.org/10.1117/12.830897

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

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
5 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Laser beam diagnostics

Diffraction

Chromium

Metals

Femtosecond phenomena

Glasses

Electrons

Show All Keywords

Keywords/Phrases

Search In:

Publication Years