Nonlinear Switching mechanism in nanostructures doped in photonic crystals

被引：0
作者：
Singh, Mahi R. [1 ]
机构：
[1] Univ Western Ontario, Dept Phys & Astron, London, ON N6G 3K7, Canada
来源：
PHOTONICS NORTH 2007, PTS 1 AND 2 | 2007年 / 6796卷
关键词：
photonic crystal; two-photon absorption; dipole-dipole interaction; density matrix method;
D O I：
10.1117/12.778766
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We have investigated the nonlinear switching mechanism in nanostructures doped in photonic crystals. The nonlinear phenomenon studied in this paper is the two-photon absorption process. A probe laser field is applied between the ground state and the next excited state of the nanoparticles to measure the two-photon absorption spectrum. A coupling field is applied between the two excited states of nanoparticles to control the two-photon process. It is found that when the decay resonance energy lies away from the photonic band edge the inhibition of two-photon absorption is observed. However, when the probe field is not resonance, the inhibition of two photons absorption is not observed. An interesting result is observed when the decay resonance energy lies near the band edge. It is found that the inhibition of the two-photon absorption disappears. It means that the phenomenon of two-photon absorption can be switched on and off by tuning the resonance energy within the lower band of the crystal. This mechanism can be used to make a new type of photonic switching devices using photonic crystals.
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页数：15
相关论文
共 57 条
[21]  
Lourtioz J. M., 2005, PHOTONIC CRYSTALS NA
[22]   Optical schemes for quantum computation in quantum dot molecules [J].
Lovett, BW ;
Reina, JH ;
Nazir, A ;
Briggs, GAD .
PHYSICAL REVIEW B, 2003, 68 (20)
[23]  
MAHI R, 2004, PHYS REV A, V69, P23807
[24]  
MAHI R, 2006, B LASER SPECTROSCOPY, V14, P136
[25]  
MAHI R, 2007, PHYS LETT A, V363, P177
[26]  
MAHI R, 1997, PHYS LETT A, V231, P115
[27]  
MAHI R, 2007, IN PRESS PHYS REV A, V75
[28]  
MAHI R, 2007, IN PRESS PHYS REV B
[29]  
MAHI R, 2007, J MODERN OPTICS, V52, P1857
[30]  
MAHI R, 2003, J MOD OPTIC, V50, P1319
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