We describe the design and fabrication of an ultracompact optical mode order converter
employing submicron waveguides. The mode converter can realize optical mode conversion …

An intra-cavity phase element, combined with a passive Q-switch saturable absorber and a
suitable intra-cavity aperture, can provide extremely high mode discrimination, so as to …

In this paper we experimentally demonstrate the intracavity generation of selected Laguerre–
Gaussian modes of variable radial order, from 0 to 5. Our technique requires only an …

Lasers are fundamental tools in research and development. The shape of an incident laser
beam directly affects the results, when it propagates through complex structured meso …

The ability to control the optical field in the vicinity of an individual nano‐object is an obvious
step**‐stone in the tailoring of light‐matter interactions at the nanoscale. Earlier reports …

We present a rigorous analysis methodology of fundamental to higher order mode
converters in step index few mode optical fibers. We demonstrate experimental conversion …

We present a compact and practical combined laser resonator configuration in which
several Gaussian beam distributions are efficiently combined. It is based on intracavity …

Efficient free-space configurations for phase locking and coherent addition of two fiber
lasers, each operating with a high-order mode, are presented. Experimental results reveal …

A novel technique to improve the focus depth of a Gaussian beam is presented in this paper.
The improvement is based on two-step beam sha** using a cascade of binary phase …

We propose and demonstrate a method for the adaptive phase correction of dynamic
multimode fiber beams. The phase of incident beam is reconstructed in real-time based on …