Manipulating geometric and optical properties of laser-inscribed nanogratings with a conical phase front

Alimohammadian E, Lammers K, Alberucci A, Djogo G, Jisha CP, Nolte S, Herman PR (2022)

Publication Type: Journal article

Publication year: 2022

Journal

Optics Express Optical Society of America

Book Volume: 30

Pages Range: 5360-5375

Journal Issue: 4

DOI: 10.1364/OE.437591

Abstract

The formation of volumetric nanogratings in fused silica by femtosecond laser pulses are shown to afford new opportunities for manipulating the physical shape and tailoring the optical properties of the modification zone by harnessing unconventional beam shapes. The nanograting assembly was observed to rigorously follow the beam elongation effects induced with conical-shaped phase fronts, permitting a scaling up of the writing volume. Detailed optical characterization of birefringence, dichroism, and scattering loss pointed to flexible new ways to tune the macroscopic optical properties, with advantages in decoupling the induced phase retardation from the modification thickness by controlling the conical phase front angle. Further insights into an unexpected asymmetric response from Gaussian beams modified with concave and convex phase fronts have been provided by nonlinear propagation simulations of the shaped-laser light.

Involved external institutions

University of Toronto CA Canada (CA) Friedrich-Schiller-Universität Jena DE Germany (DE)

How to cite

APA:

Alimohammadian, E., Lammers, K., Alberucci, A., Djogo, G., Jisha, C.P., Nolte, S., & Herman, P.R. (2022). Manipulating geometric and optical properties of laser-inscribed nanogratings with a conical phase front. Optics Express, 30(4), 5360-5375. https://doi.org/10.1364/OE.437591

MLA:

Alimohammadian, Ehsan, et al. "Manipulating geometric and optical properties of laser-inscribed nanogratings with a conical phase front." Optics Express 30.4 (2022): 5360-5375.

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