Basıncın ve Sıcaklığın Dış Elektrik Alan Altındaki Kübik Kuantum Noktasının Üçüncü Harmonik Üretimi Üzerine Etkisi

Düşük boyutlu sistemler, yük taşıyıcılarının nano ölçekte sınırlandırıldığı yapılardır. Yük taşıyıcı hareketinin üç boyutta sınırlandırıldığı yapılar kuantum noktalar olarak bilinir ve bu yapılar moleküler biyoloji uygulamalarında, tıbbi görüntülemede, bilgi depolamada, optik ve iletişim gibi aygıt uygulamalarında önemli bir rol oynar. Bu çalışmada, dış elektrik alan altındaki kübik kuantum noktasının üçüncü harmonik üretimi üzerine basıncın ve sıcaklığın etkisi teorik olarak incelenmiştir. Sayısal hesaplamalar etkin kütle yaklaşımı altında yapılmıştır. Yapının taban durumu ve uyarılmış durumların enerji özdeğerleri hesaplanmış ve elde edilen bu değerler optik özelliğin hesaplanmasında kullanılmıştır. Aynı zamanda, kübik kuantum nokta boyutu ve durulma oranı etkisi de incelendi. Sonuçlar basınç ve sıcaklığın üçüncü harmonik üretimi üzerine büyük bir etkisinin olduğunu göstermektedir.

Anahtar Kelimeler:

Basınç, Kübik kuantum nokta, Sıcaklık, Üçüncü harmonik üretimi

The Effect of Pressure and Temperature on the Third Harmonic Generation of Cubical Quantum Dot Under External Electric Field

Low dimensional systems are structures in which the charge carriers are confined in nanoscale. The structures that the movements of charge carriers are restricted in three dimensions are known as quantum dot and these structures play important role in application of molecular biology, medical imaging, storage of data, application devices such as optics and communication. In this study, the effects of pressure and temperature on the third harmonic generation of cubic quantım dot under external electric field theoretically have been investigated. Numerical calculations have been done within the effective-mass approximation. The energy eigenvalues of the ground state and excited states of the structure have been calculated and the obtained these values have been used in calculation of optical properties. Also,the effects of size of cubical quantum dot and the relaxation rate have been investigated. Results show that the pressure and temperature has a great influence on third harmonic generation.

Keywords:

Pressure, Cubical quantum dot, Temperature, Third harmonic generation,

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