Second-harmonic generation of asymmetric Bessel-Gaussian beams carrying orbital angular momentum
Abstract
Nonlinear processes of laser beams carrying orbital angular momentum (OAM) offer a means to generate new wavelengths and to manipulate OAM charge numbers. We demonstrate the second-harmonic generation (SHG) of asymmetric Bessel-Gaussian (BG) beams carrying OAM of both integer and fractional charge numbers. Experimental results show a good one-to-one correspondence of the charge numbers and compliance with the OAM conservation law. The SHG conversion process and efficiency with different combined charge numbers are also discussed.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Jan 17, 2020
- Source ID
- 10.1364/oe.381679
Entities
People
- Eric G. Johnson
- J. Keith Miller
- Kaitlyn S. Morgan
- Kunjian Dai
- Richard J. Watkins
- Wenzhe Li
- Yuan Li
Organizations
- Office of Naval Research