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Updated: Jul 11, 2026
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Stimulated Stokes and Antistokes Raman Scattering in Microspherical Whispering Gallery Mode Resonators
Published on: April 4, 2016
Stochastic resonance in vertical cavity surface emitting lasers
1Istituto Nazionale di Ottica, Largo Enrico Fermi 6, 50125 Firenze, Italy.
Summary
We investigated stochastic resonance (SR) in lasers, finding it matches theory. Our study explains unique statistical features and confirms genuine resonance in laser light.
Area of Science:
- Physics
- Optics
- Nonlinear Dynamics
Background:
- Stochastic resonance (SR) is a phenomenon where a weak signal is enhanced by noise.
- Vertical cavity surface emitting lasers (VCSELs) are widely used semiconductor lasers.
- Understanding SR in lasers can lead to improved signal processing and device performance.
Purpose of the Study:
- To experimentally investigate stochastic resonance in the polarized emission of a pump-modulated VCSEL.
- To characterize SR in both time and frequency domains.
- To analyze statistical properties of SR and provide evidence for genuine resonance.
Main Methods:
- Experimental setup involving a pump-modulated VCSEL.
- Time-domain and frequency-domain characterization of SR.
- Statistical analysis using residence-time probability distributions.
- Identification of an accurate indicator for bona fide resonance.
Main Results:
- Detailed experimental investigation of SR in VCSEL polarized emission.
- Quantitative agreement between experimental results and existing SR theories.
- Observation of unique features in residence-time probability distributions.
- Clear evidence of bona fide resonance confirmed through an accurate indicator.
Conclusions:
- The study provides a comprehensive experimental validation of SR in VCSELs.
- The findings contribute to a deeper understanding of nonlinear phenomena in semiconductor lasers.
- The results confirm the applicability of SR theory and offer insights into laser dynamics.
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