Author: Leonel Pastor Gonzalez Publisher: ISBN: Category : Continuous wave radar Languages : en Pages : 0
Book Description
The use of continuous wave singly resonant optical parametric oscillators (CW SROs) has been limited in the past mainly because of the high threshold powers necessary. Thresholds of SROs are orders of magnitude greater than doubly resonant oscillators. While lithium niobate has long been in use as a nonlinear material, periodically poled lithium niobate (PPLN) recently emerged as an excellent source for CW SROs. Quasi-phase matching with PPLN has allowed access to the higher nonlinear coefficients of lithium niobate permitting construction of CW SROs. By placing the OPO within the laser resonator, threshold should be significantly reduced. We have designed, built, and investigated an optical parametric oscillator within a laser cavity to access the high circulating fields within the resonator. The intracavity OPO acted as the output coupler for the laser and ideally the total down converted power from the OPO should approach the maximum output power available from th pump laser under optimal output coupling. PPLN OPOs were built within the resonators of a lamp-pumped Nd:YAG laser and a diode-pumped Nd:YVO4 laser. Combined idler output at 3.3 microns from both ends of an intracavity 30-mm PPLN OPO was 1.15 W. Output of the Nd:YVO4 laser optimized for 1.064-micron output with the same resonator was 5 W. The entire device, except for power supply and cooler, fit on a 1' x 2' breadboard.
Author: Leonel Pastor Gonzalez Publisher: ISBN: Category : Continuous wave radar Languages : en Pages : 216
Book Description
The use of continuous wave singly resonant optical parametric oscillators (CW SROs) has been limited in the past mainly because of the high threshold powers necessary. Thresholds of SROs are orders of magnitude greater than doubly resonant oscillators. While lithium niobate has long been in use as a nonlinear material, periodically poled lithium niobate (PPLN) recently emerged as an excellent source for CW SROs. Quasi-phase matching with PPLN has allowed access to the higher nonlinear coefficients of lithium niobate permitting construction of CW SROs. By placing the OPO within the laser resonator, threshold should be significantly reduced. We have designed, built, and investigated an optical parametric oscillator within a laser cavity to access the high circulating fields within the resonator. The intracavity OPO acted as the output coupler for the laser and ideally the total down converted power from the OPO should approach the maximum output power available from th pump laser under optimal output coupling. PPLN OPOs were built within the resonators of a lamp-pumped Nd:YAG laser and a diode-pumped Nd:YVO4 laser. Combined idler output at 3.3 microns from both ends of an intracavity 30-mm PPLN OPO was 1.15 W. Output of the Nd:YVO4 laser optimized for 1.064-micron output with the same resonator was 5 W. The entire device, except for power supply and cooler, fit on a 1' x 2' breadboard.
Author: Publisher: ISBN: Category : Languages : en Pages : 6
Book Description
We have achieved 150 mW of cw output at 4.3 micrometers, using difference frequency mixing in a singly resonant optical parametric oscillator (OPO). We pumped the OPO cavity, which contains periodically poled LiNbO3 (PPLN), with a 14-W 1.06-micrometers Nd:YAG laser to generate a signal at 1.7 micrometers and an idler at 2.8 micrometers. Mixing of the two waves at the same crystal temperature and grating spacing yielded emission in the mid IR. This technique avoids the mid-IR absorption-high-threshold problem, which has limited the cw performance of PPLN OPOs at wavelengths beyond 4 micrometers. Provided that tunability is not required, this method is a simple alternative to multiple-crystal configurations.
Author: F.J. Duarte Publisher: CRC Press ISBN: 1420060589 Category : Medical Languages : en Pages : 480
Book Description
Tunability has added an important dimension to a variety of laser devices and led to new systems and applications. From laser spectroscopy to Bose-Einstein condensation, the one nexus is the tunable laser. Incorporating nine new chapters since the first edition, Tunable Laser Applications, Second Edition reflects the significant developments
Author: Irina T. Sorokina Publisher: Springer Science & Business Media ISBN: 3540006214 Category : Science Languages : en Pages : 600
Book Description
The book describes the most advanced techniques for generating coherent light in the mid-infrared region of the spectrum. These techniques represent diverse areas of photonics and include heterojunction semiconductor lasers, quantum cascade lasers, tunable crystalline lasers, fiber lasers, Raman lasers, and optical parametric laser sources. Offering authoritative reviews by internationally recognized experts, the book provides a wealth of information on the essential principles and methods of the generation of coherent mid-infrared light and on some of its applications. The instructive nature of the book makes it an excellent text for physicists and practicing engineers who want to use mid-infrared laser sources in spectroscopy, medicine, remote sensing and other fields, and for researchers in various disciplines requiring a broad introduction to the subject.
Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
Abstract: We present a continuous-wave singly-resonant optical parametric oscillator with 1.5% output coupling of the resonant signal wave, based on an angle-polished MgO-doped periodically poled lithium niobate (MgO:PPLN), pumped by a commercial Nd:YVO4 laser at 1064 nm. The output-coupled optical parametric oscillator delivers a maximum total output power of 4.19 W with 42.8% extraction efficiency, across a tuning range of 1717 nm in the near- and mid-infrared region. This indicates improvements of 1.87 W in output power, 19.1% in extraction efficiency and 213 nm in tuning range extension in comparison with the optical parametric oscillator with no output coupling, while at the expense of increasing the oscillation threshold by a factor of ∼ 2. Moreover, it is confirmed that the finite output coupling also contributes to the reduction of the thermal effects in crystal.
Author: Ralf Menzel Publisher: Springer Science & Business Media ISBN: 3662045214 Category : Science Languages : en Pages : 895
Book Description
Deals with the fundamental properties of photon and light beams, both experimentally and theoretically. It covers the essentials of linear interactions and most of the nonlinear interactions between light and matter in both the transparent and absorbing cases. About 4000 references open access to original literature.
Author: Ki Young Kim Publisher: BoD – Books on Demand ISBN: 9537619761 Category : Technology & Engineering Languages : en Pages : 366
Book Description
The title of this book, Advances in Optical and Photonic Devices, encompasses a broad range of theory and applications which are of interest for diverse classes of optical and photonic devices. Unquestionably, recent successful achievements in modern optical communications and multifunctional systems have been accomplished based on composing “building blocks” of a variety of optical and photonic devices. Thus, the grasp of current trends and needs in device technology would be useful for further development of such a range of relative applications. The book is going to be a collection of contemporary researches and developments of various devices and structures in the area of optics and photonics. It is composed of 17 excellent chapters covering fundamental theory, physical operation mechanisms, fabrication and measurement techniques, and application examples. Besides, it contains comprehensive reviews of recent trends and advancements in the field. First six chapters are especially focused on diverse aspects of recent developments of lasers and related technologies, while the later chapters deal with various optical and photonic devices including waveguides, filters, oscillators, isolators, photodiodes, photomultipliers, microcavities, and so on. Although the book is a collected edition of specific technological issues, I strongly believe that the readers can obtain generous and overall ideas and knowledge of the state-of-the-art technologies in optical and photonic devices. Lastly, special words of thanks should go to all the scientists and engineers who have devoted a great deal of time to writing excellent chapters in this book.
Author: Leonel Pastor Gonzalez
Author: Leonel Pastor Gonzalez
Author: 
Author: F.J. Duarte
Author: Alison Carleton
Author: Irina T. Sorokina
Author: 
Author: Ralf Menzel
Author: Steven Tsung-Lin Yang
Author: Ki Young Kim