Study on ingan gan quantum structures and their applications in semiconductor saturable absorber mirror 6

... quantum wells and quantum dots, operating in the blue wavelength region were investigated For InGaN/ GaN quantum well saturable absorbers, a novel and convenient method to reduce the absorption ... and contributed to different PL emission bands For quantum dot saturable absorbers, in this work, a 3-layer InGaN quantum dot sample was fabricated and its nonlinear...

Ngày tải lên: 14/09/2015, 14:02

... properties of the InGaN quantum structures, including InGaN/ GaN quantum wells and InGaN quantum dots 1. 3 InGaN/ GaN quantum wells and quantum dots InGaN is an important alloy for fabricating III-nitride ... Electron mobility μ (cm2 V -1 s -1) Thermal conductivity χ (W K -1 cm -1) 9.0 4.0 9.7 3.0 12 .8 0.4 11 .8 0.25 3.0 2.0 2.0 1. 0 13 50 800 6000 13 00 1...

Ngày tải lên: 14/09/2015, 14:02

... second) is used, and there are 25 6 or 5 12 samples in each scanning Here, one sample represents one line of scanning, which then consists of 25 6 or 5 12 sampling points 2. 3.4 Scanning electron microscopy ... excition transition and bound exciton transition Eb is the free exciton binding energy and Ebx is the bound exciton binding energy In addition to the radiative transitio...

Ngày tải lên: 14/09/2015, 14:02

... Section 3. 3 will be dedicated to the study on the effects of V-pits on the morphological and optical properties of InGaN/ GaN quantum wells Finally, in Section 3. 4, the InGaN/ GaN quantum dot saturable ... this study will only be focused on the saturable absorbers and SESAMs operating in the blue region In this chapter, Section 3. 1 will be focused on...

Ngày tải lên: 14/09/2015, 14:02

... coating After the separate study and calibration, the DBR and AR coatings were finally incorporated with the InGaN/ GaN 8-QW saturable absorber presented in 148 Chapter Design & Fabrication of GaN- based ... the GaN- based monolithic DBRs as shown in Fig 4. 1 [Ponce2003; Moustakas2001; Waldrip2001; Yao20 04; Lin20 04] In addition, in Fig 4. 10, the oscillation fringes...

Ngày tải lên: 14/09/2015, 14:02

... fabricated by the InGaN/ GaN 8-QW saturable absorber, as discussed in Chapter 5. 1 Simulation First of all, the origin of the interference fringes within the stopband of the GaN- based SESAM was investigated ... Furthermore, after thinning the GaN buffer, the period of the interference-induced oscillation fringes was increased and there was only one interference minimum falling...

Ngày tải lên: 14/09/2015, 14:02

... aims at pointing out the syntactic differences and the similarities between negation in Vietnamese and English and analyzing some negative structures from the novel Gone with the Wind by Margaret ... Mitchell and its equivalents in the translated version by Duong Tuong in an attempt to clarify the negative structures in English and Vietnamese...

Ngày tải lên: 17/07/2015, 11:03

... main hub of economic activities The major economic activities in Palapye are mining and quarrying, manufacturing (including repair of machinery and equipment), construction, wholesale and retail ... national and international level; sustaining care and support to vulnerable children and households over the long term; and support programmes for the benefit of vul...

Ngày tải lên: 15/02/2014, 19:20

... main hub of economic activities The major economic activities in Palapye are mining and quarrying, manufacturing (including repair of machinery and equipment), construction, wholesale and retail ... national and international level; sustaining care and support to vulnerable children and households over the long term; and support programmes for the benefit of vul...

Ngày tải lên: 23/03/2014, 09:20

... doi:10.1007/s11671-010-9774-z Cite this article as: Zhai et al.: One-Pot Synthesis of Biocompatible CdSe/CdS Quantum Dots and Their Applications as Fluorescent Biological Labels Nanoscale Res Lett 2011 ... temperature, and 19 mg of Se powder was added Finally, the mixture was heated to 240°C and kept for a certain period of time such as 1, 5, 60, and 120...

Ngày tải lên: 21/06/2014, 08:20

... means of additional indicators Indeed, the results of a number of recent physical investigations on ligand - stabilized transition metal clusters, which a metal nanoparticles consisting of a defined ... the doping case considered in the last section Recombination and binding energies of the excitons confined in silicon nanocrystallites are calculated within the effecti...

Ngày tải lên: 25/03/2015, 11:58

... and consumers generally It’s likely affect the importance of CSR in business today and description of the factors effecting on CSR implementation and CSR disclosure 48 CHAPTER 5: CONCLUSION AND ... the CSR definitions It’s also having many companies that perception about CSR because they don’t understand and actually practice thus there are a lot scandals in...

Ngày tải lên: 06/06/2015, 04:35

... THEORETICAL STUDY OF CARBON- BASED MATERIALS AND THEIR APPLICATIONS IN NANOELECTRONICS KAI-TAK LAM A THESIS SUBMITTED FOR THE DEGREE OF DOCTOR OF PHILIOSOPHY DEPARTMENT OF ELECTRICAL AND COMPUTER ... vii in obtaining GNRs by unzipping carbon nanotubes has made the prospect of fabricating GNR -based electronic devices in large quantities more promising an...

Ngày tải lên: 10/09/2015, 08:39

... STUDY OF SAMPLE PREPARATION AND PRETREATMENT METHODS AND THEIR APPLICATIONS, IN COMBINATION WITH HIGH- RESOLUTION CHROMATOGRAPHY BY ZHU XUERONG (M.SC.) A thesis submitted for the degree of ... developing and improving instrumentation, data-handling and report-generating software, while sample preparation and pretreatment methods have been more or...

Ngày tải lên: 16/09/2015, 15:54

... maximum MR of La0 .67Sr0. 33MnO3/ La0.85Sr0.15MnO3/La0 .67Sr0. 33MnO3 4–6% and 3–4% in and 139 Chapter Six: Nd0. 67Sr0. 33MnO3/ La0 .67Sr0. 33MnO3 bilayered films La0.7Ca0.3MnO3/La0.45Ca0 .55 MnO3/La0.7Ca0.3MnO3 ... substitution in its Nd0. 67Sr0. 33MnO3 bulk 1 07 Chapter Five: Fe- doped Nd0. 67Sr0. 33MnO3 epitaxial films 5. 1 Fe- induced magnetic, transp...

Ngày tải lên: 16/09/2015, 15:54