Download or read book Integrated High repetition rate Femtosecond Lasers at 1 55 mu m written by Hyunil Byun and published by . This book was released on 2010 with total page 201 pages. Available in PDF, EPUB and Kindle. Book excerpt: Performance of state-of-the-art, electronic analog-to-digital converters is currently limited by the 100-fs aperture jitter. However, optical sampling can overcome the jitter limit by using femtosecond lasers that have jitter as low as 100 as, which is a three orders of magnitude improvement when compared to electronics. Currently, most of these lasers exist as bulk or fiber lasers. While such configurations can provide flexibility in order to tailor the behavior of the lasers to specific needs, they are usually as expensive as $10,000 to $100,000 and require precisely adjustable mounts and high-quality optical components. To realize the possibility of femtosecond lasers replacing current electronics for unprecedented performance in the future, these lasers must be as compact, robust, and affordable as electronic circuits. A monolithically integrated mode-locked laser can lower the cost of building such femtosecond lasers and, at the same time, make them less vulnerable to environmental perturbation. This can be achieved by mass-producing them with less expensive materials such as silicon, silicon oxide, or compatible materials. Since all necessary optical components are integrated monolithically on a silicon substrate, bulky and expensive high-precision discrete components can be excluded. The goal of this thesis is the development of femtosecond lasers that can overcome the limit of electronics and potentially replace them. Possible approaches and current achievements are discussed towards this goal.
Download or read book High Repetition Rate Fiber and Integrated Waveguide Femtosecond Lasers written by Michelle Yen-Ling Sander and published by . This book was released on 2012 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt: Femtosecond lasers and the development of frequency combs have revolutionized multiple fields like metrology, spectroscopy, medical diagnostics and optical communications. However, to enable wider adoption of the technology and new applications like photonic sampling, optical arbitrary waveform generation or the calibration of astronomical spectrographs, multi-GHz repetition rate femtosecond lasers with robust performance metrics, low cost, and a compact footprint are highly desirable. In this thesis, different approaches to develop GHz mode-locked laser systems at telecommunication wavelengths are discussed and current achievements presented. Design aspects for constructing a long-term stable and compact fiber laser with 187 fs short pulses at a repetition rate of 1 GHz are covered. In order to scale the repetition rate into the multi- GHz regime, coherent pulse interleaving in novel thermally tunable waveguide interleavers is demonstrated at 10 GHz. A femtosecond erbium-doped waveguide laser is developed at GHz repetition rates and important design guidelines are provided. As saturable Bragg reflectors are crucial in all of the described systems to enable mode-locking, saturable absorber optimization is discussed and their optical performance compared. Thus, this research paves the way for compact, affordable high repetition rate fiber lasers and monolithically integrated femtosecond laser sources which can be combined on-chip with additional functionalities to develop novel photonic systems with impact on spectroscopy, sensing, telecommunications and biomedical applications.
Download or read book Development of High Repetition Rate Cr LiCAF Femtosecond Lasers and Application of Multipass cavity Ti Sapphire Lasers in THz Generation written by Can Cihan and published by . This book was released on 2013 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Femtosecond Technology for Technical and Medical Applications written by Friedrich Dausinger and published by Springer Science & Business Media. This book was released on 2004-10-14 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive overview of the principles and applications of femtosecond lasers, especially applied to medicine and to production technology. The advantages and problems of ultrashort laser pulses are discussed in more detail in the context of applications in the micro-machining of technical materials such as drilling, surface structuring and cutting, in medical use like dental, ophthalmologic, neurological and otolaryngological applications, in metrology, and in the generation of x-rays. Safety aspects are also considered.
Download or read book Femtosecond Laser Pulses written by Claude Rulliere and published by Springer Science & Business Media. This book was released on 2005 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the second edition of this advanced textbook written for scientists who require further training in femtosecond science. Four years after pub- cation of the ?rst edition, femtosecond science has overcome new challenges and new application ?elds have become mature. It is necessary to take into account these new developments. Two main topics merged during this period that support important scienti?c activities: attosecond pulses are now gen- ated in the X-UV spectral domain, and coherent control of chemical events is now possible by tailoring the shape of femtosecond pulses. To update this advanced textbook, it was necessary to introduce these ?elds; two new ch- ters are in this second edition: “Coherent Control in Atoms, Molecules, and Solids”(Chap.11)and“AttosecondPulses”(Chap.12)withwell-documented references. Some changes, addenda, and new references are introduced in the ?rst edition’s ten original chapters to take into account new developments and updatethisadvancedtextbookwhichistheresultofascienti?cadventurethat started in 1991. At that time, the French Ministry of Education decided that, in view of the growing importance of ultrashort laser pulses for the national scienti?c community, a Femtosecond Centre should be created in France and devoted to the further education of scientists who use femtosecond pulses as a research tool and who are not specialists in lasers or even in optics.
Download or read book Femtosecond Laser Filamentation written by See Leang Chin and published by Springer Science & Business Media. This book was released on 2010-03-10 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book attempts to give a discussion of the physics and current and potential applications of the self-focusing of an intense femtosecond laser pulse in a tra- parent medium. Although self-focusing is an old subject of nonlinear optics, the consequence of self-focusing of intense femtosecond laser pulses is totally new and unexpected. Thus, new phenomena are observed, such as long range lam- tation, intensity clamping, white light laser pulse, self-spatial ltering, self-group phase locking, self-pulse compression, clean nonlinear uorescence, and so on. Long range propagation at high intensity, which is seemingly against the law of diffraction, is probably one of the most exciting consequences of this new sub- eld of nonlinear optics. Because the intensity inside the lament core is high, new ways of doing nonlinear optics inside the lament become possible. We call this lamentation nonlinear optics. We shall describe the generation of pulses at other wavelengths in the visible and ultraviolet (UV) starting from the near infrared pump pulse at 800 nm through four-wave-mixing and third harmonic generation, all in gases. Remotely sensing uorescence from the fragments of chemical and biological agents in all forms, gaseous, aerosol or solid, inside the laments in air is demonstrated in the labo- tory. The results will be shown in the last part of the book. Through analyzing the uorescence of gas molecules inside the lament, an unexpected physical process pertaining to the interaction of synchrotron radiation with molecules is observed.
Download or read book Femtosecond Technology written by Takeshi Kamiya and published by Springer Science & Business Media. This book was released on 1999 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent rapid advances in femtosecond technology have had a great impact on its industrial applications, including ultrafast optoelectronic devices and optical. telecommunication systems, ultrashort-pulse lasers and measurement systems, and the development of novel materials for ultrafast functions. In this book, a wealth of knowledge covering requirements for applications as well as details of recent achievements in important technical areas is presented by internationally renowned authors in a concise, systematic form. As a whole, this is the first comprehensive book on the emerging field of femtosecond technology.
Download or read book Femtodynamics written by Ella G. Faktorovich and published by SLACK Incorporated. This book was released on 2009 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: Femtodynamics: A Guide to Laser Settings and Procedure Techniques to Optimize Outcomes with Femtosecond Lasers is a new, comprehensive text that presents a practical approach to optimizing laser settings and procedure techniques for performing LASIK, intracorneal ring segment placement, and other corneal procedures with currently available femtosecond lasers. Dr. Ella Faktorovich has provided detailed photographs and illustrations to demonstrate the techniques for optimizing procedure outcomes. The author guides you step-by-step through common procedures while providing a detailed approach to managing and preventing possible complications. Topics covered include: - Strategies for centration - Decreasing the incidence of opaque bubble layer formation - Optimizing the energy delivered to the cornea - Improving the quality of dissection As the first book on femtosecond laser application to corneal surgery, Femtodynamics: A Guide to Laser Settings and Procedure Techniques to Optimize Outcomes with Femtosecond Lasers is a useful guide for beginning surgeons as well as surgeons looking to develop or enhance their working knowledge of femtosecond lasers.
Download or read book Femtosecond Fiber Lasers at 1550 Nm for High Repetition Rates and Low Timing Jitter written by Jonathan Lee Morse and published by . This book was released on 2013 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt: Femtosecond fiber lasers have become an important enabling technology for advances in many areas including: frequency combs, precise timing distribution, optical arbitrary waveform generation, and high bit rate sampling for analog to digital conversion. Experiments and applications like these put demanding requirements on the source laser oscillator; such as operating near 1550 nm in wavelength, multi-gigahertz repetition rates, sub 100 femtosecond pulse widths, and sub 10 femtosecond timing jitters. This thesis describes the design, fabrication, and characterization of three different iterations of mode-locked laser sources utilizing erbium doped fibers and semiconductor saturable absorbing mirrors to form pulse trains in the 1550 nm wavelength band. The first systems took advantage of a highly doped erbium fiber in a sigma cavity configuration to generate 100 fs pulses at up to a 300 MHz repetition rate through polarization additive pulse mode-locking. At the time, this was the highest fundamental repetition rate to be reported for a fiber cavity in a ring configuration. The next two systems are variations on a linear cavity fiber laser design. In the first, the fiber coupling was achieved through free space optics and the saturable absorbing mirror was also imaged through lenses. Once mode-locked, repetition rates of just beyond 1 GHz were demonstrated with this design; however the laser output was relatively low power. The second version coupled the input and output light through fiber components and coupled the fiber directly to the saturable absorbing mirror. This laser mode-locked in several different states and a study to characterize and understand these states was undertaken. Ultimately, it was understood which conditions minimized the cavity noise and pulse widths thus allowing for the achievement of a 1550 nm, 1 GHz, sub 10 fs jitter, femtosecond fiber laser. This laser is more compact than competing technologies and could be constructed with relatively low cost.
Download or read book High Repetition Rate Fiber Lasers written by Jian Chen (Ph. D.) and published by . This book was released on 2009 with total page 121 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis reports work in high repetition rate femtosecond fiber lasers. Driven by the applications including optical arbitrary waveform generation, high speed optical sampling, frequency metrology, and timing and frequency distribution via fiber links, low noise fiber laser sources operating at multi-gigahertz repetition rates are developed systematically. A 200 MHz fundamentally mode-locked soliton laser and a 200 MHz fundamentally mode-locked similariton laser are first developed. Intra-cavity soliton formation is recognized as the optimum route towards achieving high fundamental repetition rates compact lasers, under the limitation of realistically available pump power. A 3 GHz fundamentally mode-locked femtosecond fiber laser is developed and verifies the soliton formation theory. Techniques in external cavity repetition rate multiplications are also discussed. A theoretical model that relates the repetition rate of the soliton laser and its other physical measurable parameters is developed to guide further high repetition rate laser development.
Download or read book High power High repetition rate 1 M Fiber Laser System for Strong field Physics and Mid infrared Generation written by Yizhou Liu and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book High repetition rate Amplification of Tunable Femtosecond Pulses with a Q switched CW Nd YAG Pumping Laser written by Yuzo Ishida and published by . This book was released on 1988 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fiber Lasers written by Liang Dong and published by CRC Press. This book was released on 2016-09-19 with total page 341 pages. Available in PDF, EPUB and Kindle. Book excerpt: The fiber laser, with its humble beginning in the late 1980s, has undergone tremendous development in the past decade or so, transforming itself from a research curiosity to a major force in modern manufacturing. Today, it is revolutionizing our economy by fundamentally changing the way we mark, machine, and process materials on an industrial scale. The recent development of high-power fiber lasers is also fundamentally shaping a wide range of other areas from physical sciences and medicine to geology and space exploration. In the past few years, the tactical deployment of direct energy weapons based on fiber lasers has become a reality. The development of fiber lasers is rooted in a number of technical areas including optical materials, optical waveguide design, nonlinear optics, optical fiber fabrication, and optical characterization, in addition to optical fiber components, and fiber laser design and architecture. No comprehensive in-depth coverage of such diverse topical areas has appeared in a single book. Many important developments have taken place in the past decade in both academia and industry. This book comprehensively covers the basics, technology and applications of fiber lasers including up-to-date developments in both academia and industry and is aimed to serve as both an introduction and research aid for graduate students, engineers, and scientists who are new to this field and also for veterans in the field
Download or read book High Repetition Rate Tunable Lasers written by Ian Jason Evans and published by . This book was released on 1993 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Development of High Repetition Rate VUV Lasers written by Paul N. Marsh and published by . This book was released on 1997 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ultrafast High Repetition Rate High power Yb doped Fiber Laser Systems written by Sedigheh Malekmohamadi and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Burst train Generation for Femtosecond Laser Filamentation driven Micromachining written by Saeid Rezaei and published by . This book was released on 2011 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bursts of femtosecond laser pulses with a repetition rate of 38.5MHz were created by integrating a purpose-built burst resonator system with a Ti: Sapphire laser system. The timing control system in this work provided flexibility for generation of any desirable pulse train profile in the burst envelope. These laser pulses further have been used for high aspect ratio hole drilling inside glass materials. High repetition rate of the pulses produces heat accumulation effects during the laser machining interaction which provided the possibility of deeper etching, increased the aspect ratio, and mitigated cracks and damages effects of single pulses. During the process, time-resolved nanosecond scale side-view images have been recorded with a time-gated intensified-CCD camera enabling the observation of transient effects during the laser machining process. These side-view images further have been used to assess the physics of burst interaction and illustrate benefits and disadvantages of high repetition rate laser pulses.
