25 August 2015 Low-loss selective excitation of higher-order modes in a diode-pumped solid-state digital laser
Author Affiliations +
Abstract
In this paper we experimentally demonstrate intra-cavity selective excitation of Higher-Order Laguerre–Gaussian modes with nonzero radial index and zero azimuthal index using a simple absorbing ring implemented on a digital laser. We show selective excitation of modes with radial order of zero to five using a non-segment absorbing rings. We then reduce the losses of the cavity that is associated with the absorbing ring by cutting the rings into segments. We then experimentally demonstrate that excited modes using half-circular segmented absorbing rings have a lower threshold compared to using a full ring while at the same time maintaining mode volume, purity and slope efficient of the laser.
© (2015) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Sandile Ngcobo, Sandile Ngcobo, Teboho Bell, Teboho Bell, Kamel Ait-Ameur, Kamel Ait-Ameur, Andrew Forbes, Andrew Forbes, } "Low-loss selective excitation of higher-order modes in a diode-pumped solid-state digital laser", Proc. SPIE 9581, Laser Beam Shaping XVI, 95810S (25 August 2015); doi: 10.1117/12.2195751; https://doi.org/10.1117/12.2195751
PROCEEDINGS
5 PAGES


SHARE
Back to Top