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Relative intensity fluctuations of single-mode class B lasers
Optics Letters
|November 21, 2007
Summary
This study compares laser diodes and solid-state lasers, finding key differences in their intensity fluctuations. A crucial parameter, the ratio of carrier to photon lifetimes, governs laser dynamics.
Area of Science:
- Laser Physics
- Quantum Optics
- Nonlinear Dynamics
Background:
- Class B lasers, including laser diodes (LD) and solid-state lasers (SSL), exhibit complex dynamics.
- Understanding relative intensity fluctuations is crucial for laser applications.
Purpose of the Study:
- To investigate and compare the relative intensity fluctuations in single-mode laser diodes and microchip solid-state lasers.
- To elucidate the underlying theoretical mechanisms governing these fluctuations.
Main Methods:
- Experimental examination of intensity fluctuations in LD and SSL.
- Development of a stochastic laser model and Fokker-Planck equation approach.
- Derivation of reduced moment equations for theoretical analysis.
Main Results:
- Significant differences in fluctuation characteristics were observed between LD and SSL.
- Close agreement between theoretical predictions and experimental results.
- Identification of the carrier-to-photon lifetime ratio as a critical parameter.
Conclusions:
- The intrinsic parameter governing the ratio of carrier density (population inversion) to photon lifetimes is pivotal for laser fluctuation dynamics.
- Theoretical models accurately predict experimental observations in class B lasers.
