Multi-threshold second-order phase transition in laser

被引：7
|
作者：
Zhuang Wei [1 ,2 ]
Yu DeShui [1 ,2 ]
Liu ZhiWen [3 ]
Chen JingBiao [1 ,2 ]
机构：
[1] Peking Univ, Inst Quantum Elect, Beijing 100871, Peoples R China
[2] Peking Univ, State Key Lab Adv Opt Commun Syst & Network, Sch Elect Engn & Comp Sci, Beijing 100871, Peoples R China
[3] Penn State Univ, Dept Elect Engn, University Pk, PA 16802 USA
来源：
CHINESE SCIENCE BULLETIN | 2011年 / 56卷 / 35期
基金：
中国国家自然科学基金;
关键词：
second-order phase transition; external cavity diode laser; Ginzburg-Landau free energy; HELIUM II; THERMAL EQUILIBRIUM; ANALOGY; HYDRODYNAMICS; SUPERFLUIDITY; THRESHOLD;
D O I：
10.1007/s11434-011-4826-z
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
We present a theory of the multi-threshold second-order phase transition, and experimentally demonstrate the multi-threshold secondorder phase transition phenomenon. With carefully selected parameters, in an external cavity diode laser system, we observe secondorder phase transition with multiple (three or four) thresholds in the measured power-current-temperature three dimensional phase diagram. Such controlled death and revival of second-order phase transition sheds new insight into the nature of ubiquitous secondorder phase transition. Our theory and experiment show that the single threshold second-order phase transition is only a special case of the more general multi-threshold second-order phase transition, which is an even richer phenomenon.
引用
收藏
页码：3812 / 3816
页数：5
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