Pulsations induced by quantum interference in a microchip solid-state laser operating on a ? transiton.

Area of Science:

• Quantum optics
• Laser physics
• Nonlinear optics

Background:

• Microchip lasers offer compact and efficient light sources.
• Frequency doubling crystals like KTP are crucial for generating shorter wavelengths.
• Atomic interference can lead to complex laser dynamics.

Purpose of the Study:

• Investigate self-induced pulsations in a specific laser system.
• Understand the role of atomic interference in laser instability.
• Verify experimental observations through theoretical analysis.

Main Methods:

• Utilized a laser-diode-pumped LiNdP(4)O(12) microchip laser.
• Incorporated an intracavity KTP frequency-doubling crystal.
• Performed linear stability analysis and numerical simulations of two-mode laser equations.

Main Results:

• Observed self-induced pulsations linked to atomic interference.
• Identified peculiar pulsations indicating laser instability.
• Confirmed experimental findings with theoretical models.

Conclusions:

• Atomic interference is a key factor in the observed laser pulsations.
• The laser system exhibits complex dynamics under specific operating conditions.
• Theoretical models accurately predict the experimental behavior of the microchip laser.