Parasitic suppression in large aperture nd:glass disk laser amplifiers

Area of Science:

• Laser Physics
• Materials Science

Background:

• Large aperture Nd:glass disk lasers are crucial for high-energy applications.
• Parasitic oscillations can significantly reduce the energy storage capacity of these lasers.

Purpose of the Study:

• To develop threshold conditions for parasitic oscillations in Nd:glass disk lasers.
• To identify modes that limit energy storage based on material parameters and disk design.
• To provide insights for designing lasers with minimized parasitic effects.

Main Methods:

• Developed threshold conditions for bulk and surface parasitic oscillations.
• Utilized an expression for energy storage distribution within a disk.
• Identified and evaluated additional limiting modes for special cases.

Main Results:

• Established a functional relationship between material parameters and parasitic oscillation thresholds.
• Determined the most limiting oscillation mode for specific disk designs.
• Quantified the impact of parasitic oscillations on energy storage.

Conclusions:

• Understanding parasitic oscillation thresholds is key to optimizing Nd:glass disk laser design.
• The developed criteria enable the prediction and mitigation of parasitic effects.
• This research facilitates the development of more efficient and higher-energy-storage disk lasers.