Modeling the beam profile of an infrared laser to create optical tweezers in high pressure cells

Abstract

In this paper, a modeling of a laser optical system for heating samples in a high-pressure cell was performed, in which the laser heating system and the optical system for measuring the temperature distribution are separated. It is shown that a setup with separate heating and temperature measurement systems allows one to: (i) adjust the optical temperature measurement system regardless of the alignment of the IR laser; (ii) obtain the optimal spot of the IR laser beam and control the beam in the future using a movable lens and an acousto-optical deflector.