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Author : Ryan Patrick Scott
Release : 2009
Genre :
Kind : eBook
Book Rating : /5 ( reviews)
Book Synopsis Laser Noise Measurement Techniques and Applications of Femtosecond Encoding in the Frequency Domain by : Ryan Patrick Scott
Download or read book Laser Noise Measurement Techniques and Applications of Femtosecond Encoding in the Frequency Domain written by Ryan Patrick Scott. This book was released on 2009. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Jun Ye
Release : 2005
Genre : Science
Kind : eBook
Book Rating : 909/5 ( reviews)
Book Synopsis Femtosecond Optical Frequency Comb: Principle, Operation and Applications by : Jun Ye
Download or read book Femtosecond Optical Frequency Comb: Principle, Operation and Applications written by Jun Ye. This book was released on 2005. Available in PDF, EPUB and Kindle. Book excerpt: Over the last few years, there has been a convergence between the fields of ultrafast science, nonlinear optics, optical frequency metrology, and precision laser spectroscopy. These fields have been developing largely independently since the birth of the laser, reaching remarkable levels of performance. On the ultrafast frontier, pulses of only a few cycles long have been produced, while in optical spectroscopy, the precision and resolution have reached one part in Although these two achievements appear to be completely disconnected, advances in nonlinear optics provided the essential link between them. The resulting convergence has enabled unprecedented advances in the control of the electric field of the pulses produced by femtosecond mode-locked lasers. The corresponding spectrum consists of a comb of sharp spectral lines with well-defined frequencies. These new techniques and capabilities are generally known as “femtosecond comb technology. ” They have had dramatic impact on the diverse fields of precision measurement and extreme nonlinear optical physics. The historical background for these developments is provided in the Foreword by two of the pioneers of laser spectroscopy, John Hall and Theodor Hänsch. Indeed the developments described in this book were foreshadowed by Hänsch’s early work in the 1970s when he used picosecond pulses to demonstrate the connection between the time and frequency domains in laser spectroscopy. This work complemented the advances in precision laser stabilization developed by Hall.
Author : John L. Hall
Release : 2001
Genre : Technology & Engineering
Kind : eBook
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Book Synopsis Laser Frequency Stabilization, Standards, Measurement, and Applications by : John L. Hall
Download or read book Laser Frequency Stabilization, Standards, Measurement, and Applications written by John L. Hall. This book was released on 2001. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Zhijiang Chen
Release : 2014
Genre : Femtosecond lasers
Kind : eBook
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Book Synopsis Fundamental Study and Application of Femtosecond Laser Solid Interactions by : Zhijiang Chen
Download or read book Fundamental Study and Application of Femtosecond Laser Solid Interactions written by Zhijiang Chen. This book was released on 2014. Available in PDF, EPUB and Kindle. Book excerpt: Femtosecond (fs, 1fs=10^(-15)s) laser pulses are used in a variety of fields from nano-machining to the quest for fusion energy. However, knowledge of quantitative details for femtosecond laser material interaction processes is still insufficient, and many unique applications remain unexplored. The first part of this thesis describes the quantitative study of the fundamental processes in early stages of femtosecond laser excited gold. The second part discusses the investigation of a unique application using femtosecond laser to tune the silicon microring resonators. In the fundamental investigation, a single state warm dense gold was generated by isochorically heating a free standing gold thin foil of 30nm thickness with a 45fs laser pulse at 400nm. The uniform heating of such a target was confirmed by simultaneous measurement of the reflectivity from its front and rear sides with two frequency chirped probe pulses, at energy density up to ~5MJ/kg. The frequency chirped pulse probe single shot technique was developed so that the evolutions of the reflectivities from front and rear surfaces of the heated foil were mapped in frequency domain. Optical pump-probe technique was then used to study the optical properties of gold in the first several picoseconds after laser excitation. The reflectivity (R) and transmissivity (T) of the excited target were measured simultaneously, and its AC conductivity was calculated from measured R and T. Experimental results were used to benchmark the first principle calculations based Density Functional Theory (DFT) and Quantum Molecular Dynamic (QMD) simulations. In the application study, the feasibility of using femtosecond laser pulses for tuning frequency in silicon microring resonators (SMR) was investigated. Due to fabrication imperfection, the designed resonant frequencies of SMRs are difficult to achieve accurately (e.g. 1nm variation in height can result in an SMR out of tune). It has been demonstrated that femtosecond laser pulses can tune the resonant frequency of SMRs permanently to either shorter or longer wavelengths, and controllable tuning is also possible.
Author :
Release : 1988
Genre : Electrooptics
Kind : eBook
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Book Synopsis Summaries of Papers Presented at the Conference on Lasers and Electro-optics by :
Download or read book Summaries of Papers Presented at the Conference on Lasers and Electro-optics written by . This book was released on 1988. Available in PDF, EPUB and Kindle. Book excerpt:
