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＜p＞Doctoral Thesis / Dissertation from the year 2007 in the subject Physics - Theoretical Physics, grade: 1,0, LMU Munich (Max-Planck-Institut f?r Quantenoptik), 193 entries in the bibliography, language: English, abstract: The investigation of laser-matter interactions calls for ever shorter pulses as new effects can thus be explored. With laser pulses consisting of only a few cycles of the electric field, the phase of these electric field oscillations becomes important for many applications. In this thesis ultrafast laser sources are presented that provide few-cycle laser pulses with controlled evolution of the electric field waveform. Firstly, a technique for phasestabilizing ultra-broadband oscillators is discussed. With a simple setup it improves the reproducibility of the phase by an order of magnitude compared to previously existing methods. In a further step, such a phase-stabilized oscillator was integrated into a chirped-pulse amplifier. The preservation of phase-stability during amplification is ensured by secondary phase detection. The phase-stabilized intense laser pulses from this system were employed in a series of experiments that studied strong-field phenomena in a time-resolved manner. For instance, the laser-induced tunneling of electrons from atoms was studied on a sub-femtosecond timescale. Additional evidence for the reproducibility of the electric field waveform of the laser pulses is presented here: individual signatures of the electric field half-cycles were found in photoelectron spectra from above-threshold ionization. Frequency conversion of intense laser pulses by high-order harmonic generation is a common way of producing coherent light in the extreme ultraviolet (XUV) spectral region. Many attempts have been made to increase the low efficiency of this nonlinear process, e.g. by quasi phase-matching. Here, high-harmonic generation from solid surfaces under grazing incidence instead from a gas target is studied as higher efficiencies are expected in this configuration. Another approach to increasing the efficiency of high-harmonic generation is the placing of the gas target in an enhancement resonator. Additionally, the production of XUV photons happens at the full repetition rate of the seeding laser, i.e. in the region of several tens to hundreds of megahertz. This high repetition rate enables the use of the XUV light for high-precision optical frequency metrology with the frequency comb technique. With such an arrangement, harmonics up to 15th order were produced. A build-up cavity that stacks femtosecond laser pulses in a coherent manner to produce intra-cavity pulse energies of more than ten microjoules at a repetition rate of ten megahertz is presented here...＜/p＞画面が切り替わりますので、しばらくお待ち下さい。
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＜p＞In this middle grade graphic novel adventure story perfect for fans of ＜em＞Zita the Spacegirl＜/em＞, a family vacation through the cosmos turns into a fight for all humankind.＜/p＞ ＜p＞Blake Laser. Daughter. Sister. ＜em＞＜strong＞Genius.＜/strong＞＜/em＞＜/p＞ ＜p＞Blake and her family are headed for a vacation out in deep space for some rest, relaxation, and a whole lot of family bonding time. It’s uncharted territory, and Blake is excited for the new adventure.＜/p＞ ＜p＞But the trip is cut short when the Interplanetary Space Control Center flags them down to warn them of danger. Someoneーor somethingーis draining energy from the sun, threatening to plummet Earth to unlivable temperatures in just under forty-eight hours. Blake and her family are the only ones close enough to investigate. They must put their trip on hold to figure out what’s going on and, more importantly, stop it. If they don’t, the fate of the entire planet hangs in the balance.＜/p＞ ＜p＞Luckily, Blake Laser has a few clever gadgets and a few more bright ideas up her sleeve that just might save the day...and the world.＜/p＞画面が切り替わりますので、しばらくお待ち下さい。
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＜p＞＜strong＞Laser-sharp Career Focus:  Pinpoint Your Passion and Purpose in 30 Days ＜/strong＞＜/p＞ ＜p＞By Karen Huller＜/p＞ ＜p＞ ＜/p＞ ＜p＞＜strong＞Lost time isn’t something we can get back. Once it’s spent, it’s gone.＜/strong＞＜/p＞ ＜p＞Some people spend their whole lives in trial and error, hoping they magically fall into a job that makes them happy. But, how many get lucky? Statistics show very few. You are not alone if you feel like there is a level of happiness in your life that cannot be achieved until your career is passion and purpose-driven.＜/p＞ ＜p＞Even Dr. Abraham Maslow considered purpose and a fulfilling vocation to be integral to happiness. What’s missing in your life? Are you here looking for greater career fulfillment? How can you make sense of what you have done in your life up to this point, especially if it seems like your path has been wayward or weaving? This book will take you on a 30-day journey inward and backward to finding the threads  that will compose the most beautiful tapestry of your future.＜/p＞ ＜p＞ ＜/p＞ ＜p＞＜strong＞What people say: ＜/strong＞＜/p＞ ＜p＞＜em＞"Your questions/topics were both inspiring and challenging - I'm sure any professional reading this book will find the focus they are looking for!"  ＜/em＞-Dominique＜/p＞ ＜p＞＜em＞"There are so many neat things going on for me right now. I am excited and grateful for your push(es). It has been a wonderful and perfect start to a fanatic journey that is just beginning. You are truly excellent in what you do. Thank you from the bottom of my heart." ＜/em＞-Rorie＜/p＞ ＜p＞＜em＞"I am excited to finally arrive at this stage with you. You have been very helpful and positive in your approach toward finding something that I want to get out of bed for- early- for every day!"＜/em＞-Bill＜/p＞ ＜p＞＜em＞"Very enlightening and helpful, thanks!" ＜/em＞- David＜/p＞ ＜p＞＜em＞"I am getting re-focused and re-energized"＜/em＞ -Michelle＜/p＞ ＜p＞＜em＞"I love. Love. Love. My job... Perfect fit with life goals. I am extremely lucky. Thanks! #lovemyjob" - Kirsten＜/em＞＜/p＞ ＜p＞ ＜/p＞ ＜p＞＜strong＞About the author: ＜/strong＞＜/p＞ ＜p＞Karen Huller is a Certified Professional R?sum? Writer, Certified Career Transition Consultant, Adjunct Professor, Outplacement Consultant, Social Media Trainer, and Job Search Innovator. ＜/p＞画面が切り替わりますので、しばらくお待ち下さい。
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＜p＞＜b＞Turn your design ideas into 3D models using Fusion 360 by honing your design skills and learning the best practices of common production technologies Purchase of the print or Kindle book includes a free PDF eBook＜/b＞＜/p＞＜h4＞Key Features＜/h4＞＜ul＞＜li＞Get familiar with Fusion 360 CAM Module and its machining potential with hands-on exercises＜/li＞＜li＞Explore major production technologies like turning, milling, laser cutting, and additive manufacturing＜/li＞＜li＞Learn how to setup your program and simulate stock removal＜/li＞＜/ul＞＜h4＞Book Description＜/h4＞Downloading a piece of 3D software and shaping concepts and ideas is quite easy. However, designing feasible and cost-effective real parts from 3D models can be challenging with traditional production technologies, or even additive manufacturing. This book will give you the know-how and skills to develop your projects from ideas to physical products, and overcome these obstacles. In ‘Making Your CAM Journey Easier with Fusion 360’, you'll discover how to set up a CAM program, pick the right tool, and optimize production. You'll learn the pros and cons of different production technologies, including turning, milling, laser cutting, and 3D printing, and understand how to choose the best option based on your needs. You’ll also explore the important computer-aided manufacturing tools that Fusion 360 offers through the use of examples and best practices. By the end of this book, you’ll understand the potential issues and drawbacks of different design components and apply workarounds to avoid design flaws.＜h4＞What you will learn＜/h4＞＜ul＞＜li＞Choose the best approach for different parts and shapes＜/li＞＜li＞Avoid design flaws from a manufacturing perspective＜/li＞＜li＞Discover the different machining strategies＜/li＞＜li＞Understand how different tool geometries can influence machining results＜/li＞＜li＞Discover how to check the tool simulation for errors＜/li＞＜li＞Understand possible fixtures for raw material blocks＜/li＞＜li＞Become proficient in optimizing parameters for your machine＜/li＞＜li＞Explore machining theory and formulas to evaluate cutting parameters＜/li＞＜/ul＞＜h4＞Who this book is for＜/h4＞＜p＞This book is for 3D enthusiasts or mechanical designers looking to turn their design ideas into 3D models, and their 3D models into final products. Familiarity with any CAD software or Fusion 360 design module is recommended; the book will then teach you the rest.＜/p＞画面が切り替わりますので、しばらくお待ち下さい。
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