Sains Malaysiana
37(3): 245-248(2008)
Optical Properties of InGaAs/GaAs Multi
Quantum Wells Structure
Grown By Molecular Beam Epitaxy
(Sifat Optik bagi InGaAs/GaAs Berbilang Perigi Kuantum
yang ditumbuhkan
Menggunakan Epitaksi Alur Molekul)
Mohd Sharizal Alias, Mohd Fauzi Maulud,
Mohd Razman Yahya & Abdul Fatah Awang Mat
Microelectronic & Nanotechnology Program
Telekom Research & Development (TMR&D)
Idea Tower, UPM-MTDC, Lebuh Silikon
43400 Serdang, Selangor, Malaysia
Soile Suomalainen
Optoelectronics Research Center (ORC)
Tampere University of Technology
P. O. Box 692, FIN-33101 Tampere
Finland
Received: 12 June 2007 / Accepted: 4 December
2007
ABSTRACT
Inclusive
analysis on the optical characteristics of InGaAs/GaAs QW structure
for 980 nm semiconductor laser operation is presented from experimental
and theoretical point of view. The InGaAs/GaAs quantum well structure
is grown by molecular beam epitaxy at different indium composition
and quantum well thickness for optical characteristic comparison.
Photoluminescence spectra from the measurement show that the spectrum
is in good agreement with the simulation
results. Detail simulation on the material gain for the InGaAs/GaAs
quantum well as a function of carrier densities and operating temperature
is also performed in order to optimize the semiconductor laser design
for device fabrication.
Keywords: Quantum well; InGaAs; semiconductor laser;
material gain
ABSTRAK
Analisis
terperinci bagi sifat optik struktur InGaAs/GaAs QW bagi operasi
laser semikonduktor 980 nm diterangkan
dari aspek eksperimen dan teori. Struktur perigi kuantum InGaAs/GaAs
ditumbuhkan menggunakan epitaksi alur molekul pada komposisi Indium
dan ketebalan perigi kuantum yang berbeza untuk perbandingan sifat
optik. Spektrum fotoluminasi daripada pengukuran menunjukkan bahawa
spektrum adalah dalam persetujuan yang
bagus dengan hasil simulasi. Simulasi terperinci keatas pekali
peningkatan optik bahan bagi perigi kuantum InGaAs/GaAs sebagai
fungsi kepada ketumpatan pembawa dan suhu operasi turut dilakukan
untuk mengoptimumkan reka bentuk laser semikonduktor bagi tujuan
fabrikasi peranti laser.
Kata kunci: Perigi kuantum; InGaAs; laser semikonduktor;
peningkatan bahan
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