Download or read book Phase Stability of Injection locked Beam of Semiconductor Lasers written by and published by . This book was released on 1992 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Phase Stability of Injection locked Beam of Semiconductor Lasers written by Jin Hyuk Kwon and published by . This book was released on 1992 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Phase Conjugate Injection Locking of Laser Diode Arrays written by Jack Feinberg and published by . This book was released on 1998 with total page 49 pages. Available in PDF, EPUB and Kindle. Book excerpt: This goal of this project is to produce a high-brightness, narrow-frequency light beam from a semiconductor laser array. We used a mutually-pumped phase conjugator to couple a single-frequency master laser into a high-power diode laser array. This injected light narrowed the frequency bandwidth of the laser array's output beam. Tuning the master laser (by adjusting its current or its temperature) then smoothly tuned the laser array, while the output beam remained diffraction limited. We compared the performance of the four types of mutually-pumped phase conjugators for injecting light into a laser array. We also invented a new technique for detecting domains hidden in photorefractive crystals. We also measured the phase of the light produced by frequency doubling in a self-phase matched optical fiber. We also measured the anisotropy of the mobility of holes in barium titanate crystals. We found that the drift mobility perpendicular to the crystal's c-axis is 40 times that along the c-axis. We also measured the calibrated small-signal gain spectrum, over a range of eight orders of magnitude, of a single-mode, flared semiconductor amplifier. We found that the detailed-balance theory of semiconductor lasers theory is not consistent with our data. We used a self-pumped phase conjugator to determine a key calibration constant in our experiments.
Download or read book Laser injection locking of lithium diodes An experimental approach with a 660 nm thorlabs diode and a 675 nm Ushio laser diode written by and published by GRIN Verlag. This book was released on 2022-01-31 with total page 43 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bachelor Thesis from the year 2021 in the subject Physics - Applied physics, grade: 1,0, University of Tubingen, language: English, abstract: The goal of this work is to find a stable injection lock setup with over 100 mW of output power. There are two diodes characterized for this aim while injection locking them. One is available at Thorlabs with a center wavelength of 660 nm and up to 120 mW of output power in the free-running state. The other diode manufactured by Ushio is not yet readily available on the market but has a center wavelength of 675 nm with up to 0,25 W of output power and can be directly operated at 671 nm by lowering the temperature. There are concerns that this temperature would be below the dew point, especially in summer. This causes condensation on the diode from the water vapor in the air, explaining why this diode is tested only via the second approach. In Section 2 a short introduction into semiconductor laser physics is explaining the working principle of laser diodes. Additionally, the injection locking theory and the Gaussian beam model are discussed. The experimental setup and instrument control are described in Section 3. This is followed by the characterization of the Thorlabs diode with a center wavelength of 660 nm in Section 4 and the Ushio diode with a center wavelength of 675 nm at appropriate temperatures in Section 5. An outlook on further improving the setup by actively stabilizing the injection lock is given in Section 6. In cold atom experiments for laser cooling and trapping of atoms, laser powers of more than 100 mW are often required. Furthermore, magneto-optical traps, while loading, are in need of sufficient power to reduce the number of atoms lost on the way. The output power of an external cavity diode laser does not produce enough output power for such applications. Alternatively, tapered amplifiers are a way to produce sufficient output power. These are currently not available for the targeted laser cooling wavelength for lithium of 671nm. However, injection locking of free-running, high power diodes is an alternative to tapered amplifiers for delivering enough output power. This is a technique to produce higher output power at a stable frequency. To achieve this, a weak signal of typically a few mW of an external cavity diode "seed" laser is injected into a free-running "slave" diode, which is capable of higher output power.
Download or read book DURIP 94 Phase Conjugate Injection Locking of Laser Diode Arrays written by and published by . This book was released on 1997 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is an 'equipment only' grant under the Defense University Research Instrumentation Program. A report of the results obtained with this equipment is contained in the final report for Grant F49620-95-1-0082, 'Phase-Conjugate Injection Locking of Laser Diode Arrays.' To avoid duplication of paperwork, only a partial summary of that report will be duplicated here. This grant is to produce high-brightness, narrow-frequency light beams from semiconductor laser arrays using optical phase conjugation. The investigators recently demonstrated that their proposed techniques are both practical and efficient, and can be applied to commercially available semiconductor lasers. Their experiments coupled an optical phase conjugator to a broad-area semiconductor laser, causing the laser to emit a 0.5 watt, near-diffraction-limited output beam. Their system is simple and compact, and it also automatically adjusts for any frequency drift or gradual misalignment of the optical components. The investigators extended their techniques from single, broad-area lasers to powerful semiconductor laser arrays.
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NASA Technical Translation written by and published by . This book was released on 1959 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Frequency stabilized Lasers and Their Applications written by Y. C. Chung and published by . This book was released on 1993 with total page 460 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Monthly Catalog of United States Government Publications written by and published by . This book was released on 1993-04 with total page 1118 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Monthly Catalogue United States Public Documents written by and published by . This book was released on 1993-05 with total page 1830 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Applications of Photonic Technology written by J. Chrostowski and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 558 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this book we present a snapshot of the state of the art in photonics in 1994, showing typical applications and emerging new ones; discussing the key technologies behind these applications, their limitations, and prospects. The articles in this book are extended versions of the papers presented at the first International Conference on Applications ofPhotonic Technology (ICAPT'94), held in Toronto, Canada, on June 21-23, 1994. Photonics has been recognized as one of the key technologies for the 21 st century, as electronics was the technology of the 20th centrury and electrical engineering changed the life of people in the 19th century. According to the recent report of the Organization for Economic Cooperation and Development in Paris (OECD), the market for photonics will grow dramatically in the next 10 years with an expected world-wide expenditure of US $230 billion from some US $30 billion in 1992. The explosion of information technology was the largest driving force for the deployment of photonic technology. It created insatiable demand for ever-higher data transmission and processing rates, which cannot be sustained by electronics alone. Boosted by the enonnous investment of the telecommunications and defense industries, the demand for photonics (or optoelectronics) is steadily increasing. It is solidly established in the long haul communications, laser printers and CD-ROMs.
Download or read book Winter Waterfront Year round Use in Metropolitan Toronto written by Xenia Klinger and published by . This book was released on 1991 with total page 79 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Advance Elements of Laser Circuits and Systems written by Ofer Aluf and published by Springer Nature. This book was released on 2021-03-09 with total page 1235 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book on Advance Elements of Laser circuits and systems Nonlinearity applications in engineering addresses two separate engineering and scientific areas, and presents advanced analysis methods for Laser circuits and systems that cover a broad range of engineering and scientific applications. The book analyzed Laser circuits and systems as linear and nonlinear dynamical systems and there limit cycles, bifurcation, and limit cycle stability by using nonlinear dynamic theory. Further, it discussed a broad range of bifurcations related to Laser systems and circuits, starting from laser system differential equations and their bifurcations, delay differential equations (DDEs) are a function of time delays, delay dependent parameters, followed by phase plane analysis, limit cycles and their bifurcations, chaos, iterated maps, period doubling. It combines graphical information with analytical analysis to effectively study the local stability of Laser systems models involving delay dependent parameters. Specifically, the stability of a given steady state is determined by the graphs of some functions of which can be expressed explicitly. The Laser circuits and systems are Laser diode circuits, MRI system Laser diode circuitry, Electron-photon exchanges into VCSEL, Ti: Sapphire laser systems, Ion channel and long-wavelength lasers, Solid state lasers, Solid state laser controlled by semiconductor devices, microchip solid-state laser, Q-switched diode-pumped solid-state laser, Nd:YAG, Mid-Infrared and Q-switched microchip lasers, Gas laser systems, copper vapor laser (CVL) circuitry, Dual-wavelength laser systems, Dual-wavelength operation of a Ti:sapphire laser, Diode-pumped Q-switched Nd:YVO4 yellow laser, Asymmetric dual quantum well lasers, Tm3+-doped silica fibre lasers, Terahertz dual-wavelength quantum cascade laser. The Book address also the additional areas, Laser X guiding system, Plasma diagnostics, Laser Beam shaping, Jitter and crosstalk, Plasma mirror systems, and High power Laser/Target diagnostic system optical elements. The book is unique in its emphasis on practical and innovative engineering and scientific applications. All conceptual Laser circuits are innovative and can be broadly implemented in many engineering applications. The dynamics of Laser circuits and systems provides several ways to use them in a variety of applications covering wide areas. This book is aimed at electrical and electronics engineers, students and researchers in physics as well. It is also aimed for research institutes in lasers and plasma physics and gives good comprehensive in laser and plasma systems. In each chapter, the concept is developed from basic assumptions up to the final engineering and scientific outcomes. The scientific background is explained at basic and advance levels and closely integrated with mathematical theory. Many examples are presented in this book and it is also ideal for intermediate level courses at graduate level studies. It is also ideal for engineer who has not had formal instruction in nonlinear dynamics, but who now desires to fill the gap between innovative Laser circuits/systems and advance mathematical analysis methods
Download or read book Selected Papers on Semiconductor Diode Lasers written by James J. Coleman and published by SPIE-International Society for Optical Engineering. This book was released on 1992 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Single Frequency Semiconductor Lasers written by Zujie Fang and published by Springer. This book was released on 2017-07-29 with total page 317 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book systematically introduces the single frequency semiconductor laser, which is widely used in many vital advanced technologies, such as the laser cooling of atoms and atomic clock, high-precision measurements and spectroscopy, coherent optical communications, and advanced optical sensors. It presents both the fundamentals and characteristics of semiconductor lasers, including basic F-P structure and monolithic integrated structures; interprets laser noises and their measurements; and explains mechanisms and technologies relating to the main aspects of single frequency lasers, including external cavity lasers, frequency stabilization technologies, frequency sweeping, optical phase locked loops, and so on. It paints a clear, physical picture of related technologies and reviews new developments in the field as well. It will be a useful reference to graduate students, researchers, and engineers in the field.
Download or read book Semiconductors and Semimetals written by and published by Academic Press. This book was released on 1985-10-23 with total page 347 pages. Available in PDF, EPUB and Kindle. Book excerpt: Semiconductors and Semimetals
Download or read book Government reports annual index written by and published by . This book was released on 199? with total page 1388 pages. Available in PDF, EPUB and Kindle. Book excerpt: