منابع مشابه
N ov 2 00 5 Dispersion managed mode - locking dynamics in a Ti : Sapphire laser
We present what is to our knowledge the most complete 1-D numerical analysis of the evolution and the propagation dynamics of an ultrashort laser pulse in a Ti:Sapphire laser oscillator. This study confirms the dispersion managed model of mode-locking, and emphasizes the role of the Kerr nonlinearity in generating mode-locked spectra with a smooth and well− behaved spectral phase. A very good a...
متن کامل2PE-STED Microscopy with a Single Ti: Sapphire Laser for Reduced Illumination
We reported a new effective approach to carry out two-photon excitation stimulated emission depletion (2PE-STED) microscopy using a single Ti:sapphire laser system. With an acoustic-optic Bragg cell, the modulated-CW 2PE STED microscope had the benefits of both CW and pulse approaches: lower input power, simple optical scheme and no complicated synchronization. Additionally, it also took advant...
متن کاملTwo-photon absorption cross section of excited phthalocyanines by a femtosecond Ti-sapphire laser.
In the past few years, photodynamic therapy (PDT) has become a major treatment for neovascular age-related macular degeneration (AMD) in which there is abnormal growth of choroidal neovasculature (CNV) that eventually obscures central vision, leading to blindness. However, one of the main limitations of current PDT is the relatively low specificity of the photosensitizer (PS) and light for path...
متن کاملFemtosecond Laser Ablation of Sapphire
INSTRUCTION Sapphire is widely used in the field of optical components and micromechanical devices owing to its useful mechanical, optical, and electrical properties. However, sapphire is mechanically and chemically difficult to machine because of its high hardness and chemical stability. The difficulty of machining sapphire has restricted the development of advanced device structures. As sapph...
متن کاملFluorescence of Ti(3+) ions thermally diffused into sapphire.
The thermal diffusion of Ti(3+) ions into sapphire is demonstrated, and the spectroscopic characteristics of the locally doped region are presented. The spectral line shape, polarization dependence, and excited-state lifetime of indiffused Ti:sapphire are in excellent agreement with previously published data for high-quality, bulk-doped Ti:sapphire laser crystals. The observed diffusion rate at...
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ژورنال
عنوان ژورنال: THE JOURNAL OF JAPAN SOCIETY FOR LASER SURGERY AND MEDICINE
سال: 1990
ISSN: 0288-6200
DOI: 10.2530/jslsm1980.11.supplement_111