LIGHT AMPLIFICATION AND LOCALIZATION IN RANDOMLY LAYERED MEDIA WITH GAIN

被引:126
作者
ZHANG, ZQ [1 ]
机构
[1] ACAD SINICA,INST PHYS,BEIJING 100080,PEOPLES R CHINA
来源
PHYSICAL REVIEW B | 1995年 / 52卷 / 11期
关键词
D O I
10.1103/PhysRevB.52.7960
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Light amplification and localization behaviors in randomly layered media with gain are studied using the transfer-matrix method. It is found that localization is enhanced due to the amplification of coherent backscattering effect. It is also found that xi(O) and l(g) are the only two relevant parameters in such systems, where xi(O) is the localization length in the absence of gain and l(g) is the gain length. The interplay of xi(O) and l(g) gives rise to two new lengths L(sr) and xi. L(sr), which behaves like (l(g) xi(O))(0.5), is a manifestation of the threshold length for the super radiation, which is strongly suppressed in one dimension. xi is the localization length in the presence of gain, which can be described by 1/xi = 1/xi(O) + 1/l(g). Results for dissipative media are also presented.
引用
收藏
页码:7960 / 7964
页数:5
相关论文
共 14 条
[1]   EFFECT OF CORRELATIONS ON THE LOCALIZATION PROPERTIES OF ELECTRONS AND PHONONS IN THE LONG-WAVELENGTH LIMIT [J].
CHU, QJ ;
ZHANG, ZQ .
PHYSICAL REVIEW B, 1989, 39 (10) :7120-7131
[2]   LOCALIZED STATES IN DISORDERED-SYSTEMS AS BOUND-STATES IN POTENTIAL WELLS [J].
ECONOMOU, EN ;
SOUKOULIS, CM ;
ZDETSIS, AD .
PHYSICAL REVIEW B, 1984, 30 (04) :1686-1694
[3]  
FENG SP, UNPUB
[4]   LASER PHYSICS - SCATTERING FOR SUPERRADIATION [J].
GENACK, AZ ;
DRAKE, JM .
NATURE, 1994, 368 (6470) :400-401
[5]   LASER ACTION IN STRONGLY SCATTERING MEDIA [J].
LAWANDY, NM ;
BALACHANDRAN, RM ;
GOMES, ASL ;
SAUVAIN, E .
NATURE, 1994, 368 (6470) :436-438
[6]  
LETOKHOV VS, 1968, SOV PHYS JETP-USSR, V26, P835
[7]   ANDERSON LOCALIZATION IN ONE-DIMENSIONAL RANDOMLY DISORDERED OPTICAL-SYSTEMS THAT ARE PERIODIC ON AVERAGE [J].
MCGURN, AR ;
CHRISTENSEN, KT ;
MUELLER, FM ;
MARADUDIN, AA .
PHYSICAL REVIEW B, 1993, 47 (20) :13120-13125
[8]   INWARD AND OUTWARD INTEGRAL-EQUATIONS AND THE KKR METHOD FOR PHOTONS [J].
MOROZ, A .
JOURNAL OF PHYSICS-CONDENSED MATTER, 1994, 6 (01) :171-182
[9]   LOCALIZATION OF LIGHT IN COHERENTLY AMPLIFYING RANDOM-MEDIA [J].
PRADHAN, P ;
KUMAR, N .
PHYSICAL REVIEW B, 1994, 50 (13) :9644-9647
[10]   MULTIPLE-SCATTERING NOISE IN ONE DIMENSION - UNIVERSALITY THROUGH LOCALIZATION-LENGTH SCALING [J].
SHENG, P ;
ZHANG, ZQ ;
WHITE, B ;
PAPANICOLAOU, G .
PHYSICAL REVIEW LETTERS, 1986, 57 (08) :1000-1003