Modeling of single pulse 3-D energy deposition profiles inside dielectrics upon fs laser irradiation with complex beam wavefronts

J. Hoyo; M. Galván-Sosa; A. Ruiz de la Cruz; E. J. Grace; A. Ferrer; J. Siegel; J. Solis

doi:10.1117/12.2052484

1 May 2014 Modeling of single pulse 3-D energy deposition profiles inside dielectrics upon fs laser irradiation with complex beam wavefronts

J. Hoyo, M. Galván-Sosa, A. Ruiz de la Cruz, E. J. Grace, A. Ferrer, J. Siegel, J. Solis

Author Affiliations +

Proceedings Volume 9131, Optical Modelling and Design III; 91310G (2014) https://doi.org/10.1117/12.2052484
Event: SPIE Photonics Europe, 2014, Brussels, Belgium

Abstract

Nonlinear laser processing of dielectrics with ultrafast lasers has been extensively studied over the last years and successfully applied to the production of photonics and micro-fluidic devices. Still, problems related to the presence of strong optical nonlinearities make it difficult to optimize the spatial intensity distribution in the focal region (SIDFR) in some cases. Methods providing a rapid estimate of the latter, even approximately, can be of great help for optimizing processing strategies and in other applications conditioned by nonlinear propagation like spatial soliton shaping. We have developed a numerical method for estimating the SIDFR inside a dielectric material, considering nonlinear absorption, nonlinear refraction and spherical aberration for laser beams with arbitrarily shaped wavefront. It is based on a generalized adaptive fast-Fourier evolver and has been successfully tested for flat wavefronts in subsurface processing. In this work we demonstrate its applicability to complex wavefronts, like those that can be generated with spatial light modulators (SLM). For this purpose the beam wavefront is described using Zernike polynomials before being propagated inside the material for different depths, pulse parameters. The results obtained show that under certain conditions, nonlinearities can be not only controlled and pre-compensated but also exploited for producing tailored SIDFRs.

Citation Download Citation

J. Hoyo, M. Galván-Sosa, A. Ruiz de la Cruz, E. J. Grace, A. Ferrer, J. Siegel, and J. Solis "Modeling of single pulse 3-D energy deposition profiles inside dielectrics upon fs laser irradiation with complex beam wavefronts ", Proc. SPIE 9131, Optical Modelling and Design III, 91310G (1 May 2014); https://doi.org/10.1117/12.2052484

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