Penta prism laser polarizer.

Area of Science:

• Optics and Photonics
• Laser Technology

Background:

• Polarization control is crucial for many laser applications.
• Existing polarizers can have limitations in efficiency, damage threshold, or extinction ratio.

Purpose of the Study:

• To propose a novel laser prism polarizer.
• To characterize its performance in terms of transmission efficiency, optical damage threshold, and extinction ratio.

Main Methods:

• Design of a penta prism-based polarizer.
• Investigation of polarization effects via two internal cascade reflections.
• Analysis of both isotropic (multilayer dielectric coatings) and anisotropic (birefringent crystal) designs.

Main Results:

• The proposed polarizer exhibits high transmission efficiency, high optical damage threshold, and high extinction ratio.
• Efficient s-state polarization is achieved in the isotropic design due to p-state leakage.
• Anisotropic designs, particularly with biaxial crystals, enable angular polarization splitting and beam fanning.

Conclusions:

• The novel laser prism polarizer offers a promising solution for high-performance polarization control.
• Both isotropic and anisotropic configurations provide distinct advantages for various laser system requirements.