Generation and control of phase-locked Bessel beams with a persistent noninterfering region
Abstract
We present, to the best of our knowledge, a novel method for the generation of multiple Bessel-like (Bessel–Gauss) beams with tilted wavefronts whose optical phases can be controlled independently. In the far field multiple field-free regions develop that are persistent to interference effects and the optical phase. The extent of these field-free regions can be controlled through the tilt angle of the wavefront with a theoretical maximum resolution of 0.1 mrad. Experimentally we employ a spatial light modulator, a lens, and an axicon, each suitable for narrow-band (continuous-wave) and broadband operation. Because of the simplicity in the optical elements, the number of noninterfering Bessel-like beams can be scaled on demand for applications that require multiple sources for coherent imaging or multiple intense beams over a controllable region with the added benefit of a field-free region for detection. Here, for reasons of clarity, we characterized two beams.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Oct 07, 2020
- Source ID
- 10.1364/josab.400801
Entities
People
- Carlos Trallero
- Edward McManus
- Nicholas May
- Richard Sadlon
- Sina Shahbazmohamadi
- Tobias Saule
- Xiaoming Yu
- Zhanna Rodnova
Organizations
- Office of Basic Energy Sciences
- Office of Naval Research