Ecdl Part 2 Module 8

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A Compact Mode Locked Diode Laser System For High Precision Frequency Comparison Experiments Band 64

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Author : Heike Christopher
language : en
Publisher: Cuvillier Verlag
Release Date : 2021-04-09

A Compact Mode Locked Diode Laser System For High Precision Frequency Comparison Experiments Band 64 written by Heike Christopher and has been published by Cuvillier Verlag this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-04-09 with Science categories.

Optical frequency combs (OFC) have revolutionized various applications in applied and fundamental sciences that rely on the determination of absolute optical frequencies and frequency differences. The latter requires only stabilization of the spectral distance between the individual comb lines of the OFC, allowing to tailor and reduce system complexity of the OFC generator (OFCG). One such application is the quantum test of the universality of free fall within the QUANTUS experimental series. Within the test, the rate of free fall of two atomic species, Rb and K, in micro-gravity will be compared. The aim of this thesis was the development of a highly compact, robust, and space-suitable diode laser-based OFCG with a mode-locked optical spectrum in the wavelength range around 780 nm. A diode laser-based OFCG was developed, which exceeds the requirements with a spectral bandwidth > 16 nm at 20 dBc, a comb line optical power > 650 nW (at 20 dBc), a pulse repetition rate of 3.4 GHz, and an RF linewidth of the free-running pulse repetition rate < 10 kHz. To realize a proof-of-concept demonstrator module, the diode laser-based OFCG was hybrid-integrated into a space-suitable technology platform that has been developed for future QUANTUS experiments. Proof of sufficient RF stability of the OFCG was provided by stabilizing the pulse repetition rate to an external RF reference. This resulted in a stabilized pulse repetition rate with an RF linewidth smaller than 1.4 Hz (resolution limited), thus exceeding the requirement. The developed diode laser-based OFCG represents an important step towards an improved comparison of the rate of free fall of Rb and K quantum gases within the QUANTUS experiments in micro-gravity.

Ecdl Part 2 Module 8

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Author : Oliver H. U. Heathcote
language : en
Publisher:
Release Date : 2004

Ecdl Part 2 Module 8 written by Oliver H. U. Heathcote and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with Information technology categories.

History Of Computing Learning From The Past

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Author : Arthur Tatnall
language : en
Publisher: Springer Science & Business Media
Release Date : 2010-08-13

History Of Computing Learning From The Past written by Arthur Tatnall and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010-08-13 with Science categories.

History of Computing: Learning from the Past Why is the history of computing important? Given that the computer, as we now know it, came into existence less than 70 years ago it might seem a little odd to some people that we are concerned with its history. Isn’t history about ‘old things’? Computing, of course, goes back much further than 70 years with many earlier - vices rightly being known as computers, and their history is, of course, important. It is only the history of electronic digital computers that is relatively recent. History is often justified by use of a quote from George Santayana who famously said that: ‘Those who cannot remember the past are condemned to repeat it’. It is arguable whether there are particular mistakes in the history of computing that we should avoid in the future, but there is some circularity in this question, as the only way we will know the answer to this is to study our history. This book contains papers on a wide range of topics relating to the history of c- puting, written both by historians and also by those who were involved in creating this history. The papers are the result of an international conference on the History of Computing that was held as a part of the IFIP World Computer Congress in Brisbane in September 2010.

Complete Ecdl 5

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Author : James Anthony Kennedy
language : en
Publisher: Gill
Release Date : 2009-01-16

Complete Ecdl 5 written by James Anthony Kennedy and has been published by Gill this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009-01-16 with Computer literacy categories.

Concise yet comprehensive textbook covering all seven modules on ECDL 5.0 syllabus for Microsoft 2003, designed specifically for students and instructors of this course. In full colour and spiral bound for ease of use. Fully approved by the ECDL Foundation.

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Author :
language : en
Publisher: IOS Press
Release Date :

written by and has been published by IOS Press this book supported file pdf, txt, epub, kindle and other format this book has been release on with categories.

Computers Helping People With Special Needs

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Author : Klaus Miesenberger
language : en
Publisher: Springer
Release Date : 2012-07-09

Computers Helping People With Special Needs written by Klaus Miesenberger and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-07-09 with Computers categories.

The two-volume set LNCS 7382 and 7383 constiutes the refereed proceedings of the 13th International Conference on Computers Helping People with Special Needs, ICCHP 2012, held in Linz, Austria, in July 2012. The 147 revised full papers and 42 short papers were carefully reviewed and selected from 364 submissions. The papers included in the first volume are organized in the following topical sections: universal learning design; putting the disabled student in charge: user focused technology in education; access to mathematics and science; policy and service provision; creative design for inclusion, virtual user models for designing and using inclusive products; web accessibility in advanced technologies, website accessibility metrics; entertainment software accessibility; document and media accessibility; inclusion by accessible social media; a new era for document accessibility: understanding, managing and implementing the ISO standard PDF/UA; and human-computer interaction and usability for elderly.

A Deep Ultraviolet Laser Light Source By Frequency Doubling Of Gan Based External Cavity Diode Laser Radiation

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Author : Norman Ruhnke
language : en
Publisher: Cuvillier Verlag
Release Date : 2022-05-13

A Deep Ultraviolet Laser Light Source By Frequency Doubling Of Gan Based External Cavity Diode Laser Radiation written by Norman Ruhnke and has been published by Cuvillier Verlag this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-05-13 with Technology & Engineering categories.

A compact and portable laser light source emitting in the wavelength range between 210 nm and 230 nm would enable numerous applications outside of laboratory environments, such as sterilization and disinfection of medical equipment, water purification or gas and air analysis using absorption spectroscopy. Such a source is also highly attractive for the identification and quantification of proteins and biomolecules by means of laser-induced fluorescence or Raman spectroscopy. In this thesis, a novel concept to realize such a compact and portable laser light source with low power consumption and an emission around 222 nm is investigated. The developed concept is based on single-pass frequency doubling of a commercially available high-power GaN laser diode emitting in the blue spectral range. Due to the low frequency doubling conversion efficiencies in this wavelength range of about 10-4 W-1, a laser diode with high optical output power above 1 W is required as pump source. Moreover, it has to exhibit narrowband emission in the range of the acceptance bandwidth of the applied nonlinear BBO crystal. Since GaN-based high-power laser diodes typically show broad emission spectra of Δλ = 1…2 nm, stabilizing and narrowing their wavelength by using external wavelength-selective elements is investigated and presented for the first time. With the understanding for the novel concept gained in this work, a compact ultraviolet laser light source was realized. It has a power consumption of less than 10 W and is exceptionally robust due to its immoveable components. The demonstrated output power of 160 μW enables numerous industrial and everyday applications for which previous laser systems have been too complex and overly cost- and energy-intensive.

Sacmat 2006

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Author :
language : en
Publisher:
Release Date : 2006

Sacmat 2006 written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with Computers categories.

Practice Assignments For Ecdl4 And Clait

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Author : Clare Townend
language : en
Publisher: Payne Gallway
Release Date : 2004

Practice Assignments For Ecdl4 And Clait written by Clare Townend and has been published by Payne Gallway this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with Computers categories.

These worksheets are suitable for anyone wanting more practice in MS Office skills - MS Word, Excel, Access and PowerPoint - in vocational or business environment.

Nursing And Informatics For The 21st Century

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Author : Charlotte Weaver
language : en
Publisher: CRC Press
Release Date : 2010-02-22

Nursing And Informatics For The 21st Century written by Charlotte Weaver and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010-02-22 with Business & Economics categories.

Nursing and Informatics for the 21st Century is the follow-up to the highly successful, award-winning first edition. Published in 2006, the first edition was a critical resource in chronicling the huge historical shift in nursing linked to the explosion of EHR national strategies and health policies around the globe. This updated edition, co-publis