Download or read book Versatile Femtosecond Optical Parametric Oscillator Frequency Combs for Metrology written by Karolis Balskus and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Femtosecond Optical Parametric Oscillator Frequency Combs for Coherent Pulse Synthesis written by Richard A. McCracken and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Frequency Standards And Metrology Procs Of The 6th Symposium written by Patrick Gill and published by World Scientific. This book was released on 2002-05-24 with total page 679 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book discusses the latest research ideas with application to frequency standards (e.g. optical clocks) and assesses ideas from previous symposia which have undergone critical analysis.
Download or read book Development and Characterisation of a Near infrared Femtosecond Optical Parametric Oscillator Frequency Comb written by Teresa I. Ferreiro and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings of the 6th Symposium on Frequency Standards and Metrology written by Patrick Gill and published by World Scientific. This book was released on 2002 with total page 679 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book discusses the latest research ideas with application to frequency standards (e.g. optical clocks) and assesses ideas from previous symposia which have undergone critical analysis.
Download or read book Ultrafast Phenomena XVI written by Paul Corkum and published by Springer Science & Business Media. This book was released on 2010-03-23 with total page 1031 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ultrafast Phenomena XVI presents the latest advances in ultrafast science, including both ultrafast optical technology and the study of ultrafast phenomena. It covers picosecond, femtosecond and attosecond processes relevant to applications in physics, chemistry, biology, and engineering. Ultrafast technology has a profound impact in a wide range of applications, amongst them biomedical imaging, chemical dynamics, frequency standards, material processing, and ultrahigh speed communications. This book summarizes the results presented at the 16th International Conference on Ultrafast Phenomena and provides an up-to-date view of this important and rapidly advancing field.
Download or read book A Femtosecond Optical Parametric Oscillator Near 3 Microns written by and published by . This book was released on 1994 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Low Noise Frequency Comb Sources Based on Synchronously Pumped Doubly Resonant Optical Parametric Oscillators written by Chenchen Wan and published by . This book was released on 2017 with total page 151 pages. Available in PDF, EPUB and Kindle. Book excerpt: Optical frequency combs are coherent light sources consist of thousands of equally spaced frequency lines. Frequency combs have achieved success in applications of metrology, spectroscopy and precise pulse manipulation and control. The most common way to generate frequency combs is based on mode-locked lasers which has the output spectrum of comb structures. To generate stable frequency combs, the output from mode-locked lasers need to be phase stabilized. The whole comb lines will be stabilized if the pulse train repetition rate corresponding to comb spacing and the pulse carrier envelope offset (CEO) frequency are both stabilized. The output from a laser always has fluctuations in parameters known as noise. In laser applications, noise is an important factor to limit the performance and often need to be well controlled. For example in precision measurement such as frequency metrology and precise spectroscopy, low laser intensity and phase noise is required. In mode-locked lasers there are different types of noise like intensity noise, pulse temporal position noise also known as timing jitter, optical phase noise. In term for frequency combs, these noise dynamics is more complex and often related. Understanding the noise behavior is not only of great interest in practical applications but also help understand fundamental laser physics. In this dissertation, the noise of frequency combs and mode-locked lasers will be studied in two projects. First, the CEO frequency phase noise of a synchronously pumped doubly resonant optical parametric oscillators (OPO) will be explored. This is very important for applications of the OPO as a coherent frequency comb source. Another project will focus on the intensity noise coupling in a soliton fiber oscillator, the finding of different noise coupling in soliton pulses and the dispersive waves generated from soliton perturbation can provide very practical guidance for low noise soliton laser design. OPOs are used to generate coherent laser-like radiations at which frequency the common gain material is not available. It is also a good candidate for extend frequency comb spectral range, for comb generation, the OPO is usually pumped by a comb source thus the OPO cavity needs to be synchronized to the pump pulses. Depending on whether the signal or idle light is in resonance, the OPO could be singly or doubly resonant. The doubly resonant OPO (DOPO) has much lower lasing threshold since both signal and idle are in resonance, but it also requires more cavity stability and was historically considered unstable for operation. However, recent research has proved that the synchronously pumped doubly resonant OPO could operate even without active cavity stabilization. Moreover, when the OPO is in degenerate state where the signal and idler are identical the OPO will remain frequency stabilized because it's acting as a frequency divide-by-2 system. This makes the DOPO an excellent candidate for extending the frequency comb spectral range to mid-IR by pumping with a frequency comb at near IR wavelength.In the dissertation, first a 1 um Yb-doped fiber oscillator will be frequency stabilized to generate a frequency comb. The repetition rate is locked indirectly by locking the Yb laser to a stabilization single frequency laser and the CEO frequency is locked by f-2f self-reference. The fully locked 1 um comb is then used to pump a DOPO. The DOPO can operate at either degenerate or non-degenerate states by tuning its cavity length. To characterize the OPO, its output spectral, output power will be measured. More importantly the CEO frequency of the OPO will also need to be simultaneously measured in order to verify and study the self stabilization of DOPO at degeneracy. To quantify the coherence property of the DOPO, the CEO frequency noise transfer function will also be measured, the pump comb is frequency modulated with an acousto-optic modulator (AOM) and the transfer function could be measured by measuring the DOPO CEO frequency phase noise. The DOPO would be a self-locked comb source if it fully inherits the pump comb coherence. This enables measuring the CEO frequency phase noise of the unlocked DOPO comb to be compared with the pump phase noise quantitatively. In the second part of the dissertation, the intensity noise of a soliton mode-locked laser is studied. The soliton is a pulse with perfect balance of dispersion and nonlinearity so it can propagate without any change of its spectral and temporal shape. In this project, an all-fiber Er soliton laser will be build. Due to the perturbation of cavity elements such as segmental gain and loss, the soliton generate dispersive wave that co-propagates inside the cavity. Notably the dispersive wave with the same phase shift of the soliton can interfere with the soliton and produce spectral peaks known as Kelly sidebands. In this work, the spectrally resolved intensity noise coupling in the soliton laser is studied. The results reveal that most of the intensity noise from the pump is couple to the Kelly sidebands while the soliton is much quieter in terms of intensity noise. In the last part of the dissertation, the 3D wave packets generation and measurement system are introduced. A SLM-based pulse shaper and beam shaper are used to generate special 3D optical wave packets from a mode-locked fiber laser. The programmable SLM enables generation of varies beam and pulse shapes. In particular, the so called wave bullets are generated with combination of diffraction free Bessel beams and dispersion free Airy pulses. To measure the 3D wave packets, a cross-correlation interferometer is demonstrated to have the capacity to reconstruct the full 3D intensity profiles of the complex wave packets.
Download or read book Diode Pumped Optical Parametric Oscillator and Optical Frequency Comb Generation at 1 5 Micrometers written by and published by . This book was released on 1996 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: An instrumentation grant for the purchase of an tunable diode laser-amplifier, a rf synthesizer, and a rf spectrum analyzer is used to significantly enhance current research and support new investigations in optical parametric oscillators and wide-span optical frequency comb generation. Areas of research that benefit from the new capabilities include precision frequency metrology, optical communications, and multi-wavelength information processing. The fabricated diode laser at 790 nm has been utilized to generate tunable 1.6 um light using difference-frequency mixing in a quasi-phase matched periodically-poled lithium niobate substrate. It will also be used to pump an optical parametric oscillator for the generation of tunable 1.5-1.6 um radiation in the mW power range. The spectrum analyzer and synthesizer are to be used for evaluating the beat-note and phase noise characteristics of optical parametric oscillators and optical frequency comb generators.
Download or read book Femtosecond Optical Frequency Comb Principle Operation and Applications written by Jun Ye and published by Springer Science & Business Media. This book was released on 2006-06-15 with total page 373 pages. 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.
Download or read book High repetition rate Femtosecond Optical Parametric Oscillators Based on KTP and PPLN written by Xinping Zhang and published by . This book was released on 2002 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Femtosecond Combs for Optical Frequency Metrology written by Veronika Tsatourian and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Breath Analysis written by Stefan Weigl and published by Springer Nature. This book was released on 2022-11-14 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume highlights the potentials as well as the limits and challenges of human breath analysis and describes the current efforts made to advance this promising technology from bench to bed. Human breath analysis is a young, interdisciplinary and innovative research field aiming to provide a smart and non-invasive diagnostic tool, which can be used for screening, detecting and monitoring of diseases or metabolic disorders. This book presents different approaches for breath analysis including real-time and offline mass spectrometry as well as optical and semiconductor gas sensing methods. Besides, the role of smart algorithms to improve the performance of those technologies and the importance of pulmonary function diagnostics for more reliable and meaningful breath analysis are highlighted. Finally, current application scenarios and future perspectives of breath analysis and pulmonary functioning tests are addressed. The volume is useful for researchers, who are new in the field, to easily get an overview of the current status and the challenges present in human breath analysis. Topics from fundamental research over targeted sensor development and application scenarios are described. Thus, this volume covers all development stages providing support and inspiration for engineers, medical doctors and scientists from various fields.
Download or read book Laser Physics written by and published by . This book was released on 2008 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Acquisition of a Femtosecond Optical Parametric Oscillator Amplifier and Pulse Diagnostics written by V. Apkarian and published by . This book was released on 1998 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: This equipment grant was intended to significantly enhance our experimental capabilities in femtosecond time resolved studies of molecular dynamics in condensed media. Two major improvements were the goals. Both have been successfully completed, and have generated results that have already been published. I describe them succinctly. a) Since electronic recording speeds are limited to the GHz range, time resolved studies on femtosecond time scales invariably involve the use of two or mdre laser pulses, in which time steps are derived as a function of optical delay lines between pump and probe pulses. Quite clearly, to be able to follow the relevant science, the light sources should have the flexibility to tune to system resonances. As such, it is obvious that both pump and probe wavelengths should be tunable. Our femtosecond laser consisted of one tunable leg, one Optical Parametric Oscillator (OPO) pumped by a Ti:Sapphire laser. Under this grant, we developed a second one pumped by the same source, thus creating a two color, independently tunable, yet synchronized femtosecond spectrometer. While our initial intention was to purchase a second OPO, given the unsatisfactory specifications of commercially available units, we designed and constructed our own OPO. The system proved to be quite efficient, enabling us to use intensities as low as 500 microJ/pulse to pump both OPOs. A schematic of our design is presented in Fig. 1. We now boast of a two-color fs spectrometer with 80 fs time resolution (from cross correlation between the two arms) and independent tunability from 480 nm to 2400 nm in each arm. Data obtained with this system, measurements of nonadiabatic dynamics in solids, is already in press.
Download or read book Femtosecond Optical Parametric Oscillators in the Mid infrared written by Zoe E. Penman and published by . This book was released on 1999 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Frequency Comb Generation in a Pump Enhanced Optical Parametric Oscillator written by Michael B. Spurr and published by . This book was released on 2005 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
