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Title: Mapping WGMs of erbium doped glass microsphere using near-field optical probe
Authors: Trần, Thị Tâm
Hồ, Đức Vĩnh
Keywords: Lập bản đồ;Thăm dò quang học;Khoa học vật liệu
Issue Date: 2006
Publisher: ĐHCN
Citation: Hồ, Đ. V. (2006). Mapping WGMs of erbium doped glass microsphere using near-field optical probe. Doctoral thesis, Vietnam National University, Hanoi
Abstract: Microspheres act as high Q resonators in optical regime. The curved surface of a microshere leads to efficient confinement of light waves. The light waves totally reflect at the surface and propagate along the circumference. If they round in phase, resonant standing waves are produced near the surface. Such resonances are called "morphology dependent resonances (MDRs)" because the resonance frequencies strongly depend on the size parameter l p a x 2 = , (where a is the radius of microstructure and l is the light wavelength). Alternatively , the resonant modes are often called "Whispering Gallery Modes (WGMs)". The WGMs are named because of the similarity with acoustic waves traveling around the inside wall of a gallery. Early this century, L.Rayleigh [46] first observed and analyzed the "whispers" propagating around the dome of St.Catherine's cathedral in England. Optical processes associated with WGMs have been studied extensively in recent years [45].
Luận văn ThS. Vật liệu và linh kiện Nano -- Trường Đại học Công nghệ. Đại học Quốc gia Hà Nội, 2006
Language: en
Format Extent: 79 p.
Appears in Collections:UET - Master Theses

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