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

K Otsuka, J Y Ko, S Higashihara

|November 28, 2007

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Self-induced pulsations were observed in a microchip laser due to atomic interference. These laser instabilities were confirmed through stability analysis and numerical simulations.

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.

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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.