All-optical tunable wavelength conversion in opaque nonlinear nanostructures
Abstract
We demonstrate a simple, femtosecond-scale wavelength tunable, subwavelength-thick nanostructure that performs efficient wavelength conversion from the infrared to the ultraviolet. The output wavelength can be tuned by varying the input power of the infrared pump beam and/or relative delay of the control beam with respect to the pump beam, and does not require any external realignment of the system. The nanostructure is made of chalcogenide glass that possesses strong Kerr nonlinearity and high linear refractive index, leading to strong field enhancement at Mie resonances. Although, as many other materials, chalcogenide glasses absorb in the ultraviolet range, fundamental phase-locking mechanism between the pump and the inhomogeneous portion of the third-harmonic signal enables ultraviolet transmission with little or no absorption.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- May 30, 2022
- Source ID
- 10.1515/nanoph-2022-0078
Entities
People
- Anthony Clabeau
- Jesse A. Frantz
- Jiannan Gao
- Liang Feng
- Maria Antonietta Vincenti
- Michael Scalora
- Natalia M. Litchinitser
- Xingdu Qiao
Organizations
- Duke University
- Maryland Advanced Development Laboratory
- National Science Foundation
- Office of Naval Research
- United States Army Research Laboratory
- United States Naval Research Laboratory
- University of Brescia
- University of Pennsylvania