Longitudinal-mode selectivity and perturbation sensitivity of multimirror laser cavities

Area of Science:

• Laser Physics
• Optical Engineering

Background:

• Multimirror laser cavities are crucial for advanced laser applications.
• Controlling spectral properties and frequency stability remains a challenge.

Purpose of the Study:

• To theoretically investigate multimirror laser cavities with high-finesse reflective multipass interferometers.
• To analyze the impact of geometrical and optical characteristics on spectral control.
• To explore their potential for frequency stabilization in high-power pulsed lasers.

Main Methods:

• Theoretical investigation of cavity features.
• Analysis of spectral control dependence on cavity design.
• Evaluation of sensitivity to optical length perturbations.

Main Results:

• Cavities with optimized multipass interferometers enable single longitudinal mode operation.
• These cavities act as effective emission frequency stabilizers due to low sensitivity to perturbations.
• Design criteria for achieving narrow linewidth and perturbation minimization are provided.

Conclusions:

• Suitably designed multimirror laser cavities provide excellent spectral control and frequency stabilization.
• They are particularly beneficial for intrapulse and pulse-to-pulse stabilization of high-power pulsed lasers.
• The study offers guidelines for designing optimized laser cavities.