Refractive index change in lithium niobate induced by focused femtosecond laser

Li Gui; Baoxi Xu; Dongjiang Wu; Yeow Whatt Goh; Tow Chong Chong

doi:10.1117/12.528712

28 May 2004 Refractive index change in lithium niobate induced by focused femtosecond laser

Li Gui, Baoxi Xu, Dongjiang Wu, Yeow Whatt Goh, Tow Chong Chong

Proceedings Volume 5355, Integrated Optics: Devices, Materials, and Technologies VIII; (2004) https://doi.org/10.1117/12.528712
Event: Integrated Optoelectronic Devices 2004, 2004, San Jose, CA, United States

Abstract

Lithium Niobate is an important material in optical communication due to its special characteristics (high electrooptic coefficients and high optical transparency in the near infrared wavelengths). In this paper, we investigated the effects of 775-nm, femtosecond laser radiation on the Lithium Niobate crystal. By focusing the laser beam through a microscope objective, a certain refractive index change may be induced in Lithium Niobate substrate. Based on this effect, channel waveguides and other waveguide structures were fabricated. The output optical fields through them were measured, and the refractive index change of ~6×10^-4 was calculated with the Near-field Method. The properties of these waveguide structures were discussed. We also investigated the waveguides effect induced with different fabrication conditions. The experimental results revealed that different fabrication conditions affect the waveguide effect greatly.

Citation Download Citation

Li Gui, Baoxi Xu, Dongjiang Wu, Yeow Whatt Goh, and Tow Chong Chong "Refractive index change in lithium niobate induced by focused femtosecond laser", Proc. SPIE 5355, Integrated Optics: Devices, Materials, and Technologies VIII, (28 May 2004); https://doi.org/10.1117/12.528712

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