Search for dissertations about: "photo diode"

Showing result 11 - 15 of 18 swedish dissertations containing the words photo diode.

2. 11. Computational Studies of 2D Materials : Application to Energy Storage and Electron Transport in Nanoscale Devices

   Author : Vivekanand Shukla; Rajeev Ahuja; Anton Grigoriev; Sudip Chakraborty; Kristian Sommer Thygesen; Uppsala universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Density functional theory; Non-equilibrium Green s function; 2D materials; Energy storage; Electron transport;

   Abstract : The field of two-dimensional (2D) layered materials provides a new platform for studying diverse physical phenomena that are scientifically interesting and relevant for technological applications. Novel applications in electronics and energy storage harness the unique electronic, optical, and mechanical properties of 2D materials for design of crucial components. READ MORE

4. 12. On electronics for measurement systems

   Author : Johan Borg; Ed Cherry; Luleå tekniska universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Industriell elektronik; Industrial Electronics;

   Abstract : This thesis collects the work performed by the author on electronics for measurement systems. The first part is the work performed on the EISCAT 3D ionospheric research radar, including two papers on the investigations on required performance, electronics design, and proof of concept signal processing. READ MORE

5. 13. Spectral control of lasers and optical parametric oscillators with volume Bragg gratings

   Author : Björn Jacobsson; Fredrik Laurell; Uwe Morgner; KTH; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; volume Bragg gratings; single-longitudinal-mode laser; laser tuning; erbium; neodymium; ytterbium; nonlinear optics; optical parametric oscillator; KTP; tunable optical parametric oscillator; narrowband optical parametric oscillator; Physics; Fysik;

   Abstract : I den här avhandlingen visas hur lasrar och optiska parametriska oscillatorer (OPO:er) kan styras spektralt med hjälp av volymbraggitter. Volymbraggitter utgörs av ett periodiskt varierande brytningsindex som skrivits i ett fototermorefraktivt glas. READ MORE

6. 14. Properties of Volume Bragg Gratings and Nonlinear Crystals for Laser Engineering

   Author : Staffan Tjörnhammar; Fredrik Laurell; Valdas Pasiskevicius; Takunori Taira; KTH; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; volume Bragg grating; VBG; thermal effects; nonlinear optics; KTiOPO4; quasi-phase matching; photochromic damage; grey-tracking; color centers; blue-light induced infrared absorption; BLIIRA; Physics; Fysik;

   Abstract : This thesis focuses on two topics: thermal limitations of volume Bragg gratings (VBGs) employed as laser-cavity mirrors and formation of color centers in KTiOPO4 and its isomorphs.To explore the mechanisms of the thermal limitations of VBGs in high power lasers, I designed and constructed a diode-pumped, solid‑state laser with a VBG as cavity mirror that had a significantly higher absorption than what is typical. READ MORE

7. 15. Optical Characterization of GaN/AIGaN Quantum Well Structures

   Author : Hamid Haratizadeh; Tatiana Shubina; Linköpings universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES;

   Abstract : The III-nitride material family is particularly well suited for optoelectronic applications, e.g. as UV light emitters in future lighting solutions that are expected to replace the incandescent and fluorescent lamps in use today. READ MORE