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Lag synchronization in coupled Nd:YAG lasers pumped by laser diodes
Dae-Sic Lee1, Guang-Hoon Kim, Uk Kang
1SOI-KOREA Center,KERI, Gyeonggi-TP, 1271-11, Sa-1dong, Ansan, Gyeonggi-do, 426-901, Korea. dslee@keri.re.kr
Optics Express
|June 17, 2009
Summary
Researchers explored lag synchronization in coupled Nd:YAG lasers. They found that under strong electronic coupling, these lasers exhibit lag synchronization, a state where one laser output lags behind the other.
Area of Science:
- Nonlinear dynamics
- Laser physics
- Experimental physics
Background:
- Mutual coupling can lead to complex synchronization phenomena in laser systems.
- Nd:YAG lasers are widely used in scientific research and industrial applications.
Purpose of the Study:
- To experimentally investigate lag synchronization in mutually coupled Nd:YAG lasers.
- To analyze the conditions and characteristics of lag synchronization in this system.
Main Methods:
- Utilizing two electronically coupled laser diode pumped Nd:YAG lasers.
- Analyzing error dynamics, phase portraits, and similarity functions to study synchronous behavior.
- Calculating the probability distribution of intermittent lag synchronization length.
Main Results:
- Lag synchronization was observed in a strong coupling strength region for the coupled Nd:YAG lasers.
- Analysis of error dynamics, phase portraits, and similarity function confirmed the presence of lag synchronization.
- The probability distribution of intermittent lag synchronization length further validated the observation.
Conclusions:
- Mutually coupled Nd:YAG lasers can exhibit lag synchronization under specific conditions.
- The experimental methodology provides a robust way to identify and confirm lag synchronization in laser systems.
