Monolithic Diode-Laser Arrays

Monolithic Diode-Laser Arrays PDF Author: Nils W. Carlson
Publisher: Springer Science & Business Media
ISBN: 3642789420
Category : Science
Languages : en
Pages : 405

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Book Description
Although semiconductor-diode lasers are the most compact, highest gain and most efficient laser sources, difficulties remain in developing structures that will produce high-quality, diffraction-limited output beams. Indeed, only a few designs have emerged with the potential for producing high-power, high-brightness monolithic sources. This book presents and analyzes the results of work performed over the past two decades in the development of such diode-laser arrays.

Monolithic Diode-Laser Arrays

Monolithic Diode-Laser Arrays PDF Author: Nils W. Carlson
Publisher: Springer Science & Business Media
ISBN: 3642789420
Category : Science
Languages : en
Pages : 405

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Book Description
Although semiconductor-diode lasers are the most compact, highest gain and most efficient laser sources, difficulties remain in developing structures that will produce high-quality, diffraction-limited output beams. Indeed, only a few designs have emerged with the potential for producing high-power, high-brightness monolithic sources. This book presents and analyzes the results of work performed over the past two decades in the development of such diode-laser arrays.

Diode Laser Arrays

Diode Laser Arrays PDF Author: Dan Botez
Publisher: Cambridge University Press
ISBN: 0521419751
Category : Science
Languages : en
Pages : 468

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Book Description
This book provides a thorough overview of the principles and uses of semiconductor diode laser arrays. Coherent, incoherent, edge- and surface-emitting, horizontal- and vertical-cavity, individually addressed, lattice-matched and strained-layer arrays are all discussed in detail.

Monolithic Etched-facet Triangular Waveguide Diode Ring Laser Arrays for Hybrid Optical Packages Using Passive Alignment

Monolithic Etched-facet Triangular Waveguide Diode Ring Laser Arrays for Hybrid Optical Packages Using Passive Alignment PDF Author: Karen Irene Wilson
Publisher:
ISBN:
Category :
Languages : en
Pages : 778

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Book Description


High-Power Diode Lasers

High-Power Diode Lasers PDF Author: Roland Diehl
Publisher: Springer Science & Business Media
ISBN: 3540478523
Category : Science
Languages : en
Pages : 420

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Book Description
Starting from the basics of semiconductor lasers with emphasis on the generation of high optical output power the reader is introduced in a tutorial way to all key technologies required to fabricate high-power diode-laser sources. Various applications are exemplified.

Near-diffraction-limited High-power Pulsed and CW Antiguided Semiconductor Laser Arrays

Near-diffraction-limited High-power Pulsed and CW Antiguided Semiconductor Laser Arrays PDF Author: Haiquan Yang
Publisher:
ISBN:
Category :
Languages : en
Pages : 270

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Book Description


Tailoring the Emission of Stripe-array Diode Lasers with External Cavities to Enable Nonlinear Frequency Conversion

Tailoring the Emission of Stripe-array Diode Lasers with External Cavities to Enable Nonlinear Frequency Conversion PDF Author: Andreas Jechow
Publisher: Universitätsverlag Potsdam
ISBN: 3869560312
Category : Science
Languages : en
Pages : 152

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Book Description
A huge number of applications require coherent radiation in the visible spectral range. Since diode lasers are very compact and efficient light sources, there exists a great interest to cover these applications with diode laser emission. Despite modern band gap engineering not all wavelengths can be accessed with diode laser radiation. Especially in the visible spectral range between 480 nm and 630 nm no emission from diode lasers is available, yet. Nonlinear frequency conversion of near-infrared radiation is a common way to generate coherent emission in the visible spectral range. However, radiation with extraordinary spatial temporal and spectral quality is required to pump frequency conversion. Broad area (BA) diode lasers are reliable high power light sources in the near-infrared spectral range. They belong to the most efficient coherent light sources with electro-optical efficiencies of more than 70%. Standard BA lasers are not suitable as pump lasers for frequency conversion because of their poor beam quality and spectral properties. For this purpose, tapered lasers and diode lasers with Bragg gratings are utilized. However, these new diode laser structures demand for additional manufacturing and assembling steps that makes their processing challenging and expensive. An alternative to BA diode lasers is the stripe-array architecture. The emitting area of a stripe-array diode laser is comparable to a BA device and the manufacturing of these arrays requires only one additional process step. Such a stripe-array consists of several narrow striped emitters realized with close proximity. Due to the overlap of the fields of neighboring emitters or the presence of leaky waves, a strong coupling between the emitters exists. As a consequence, the emission of such an array is characterized by a so called supermode. However, for the free running stripe-array mode competition between several supermodes occurs because of the lack of wavelength stabilization. This leads to power fluctuations, spectral instabilities and poor beam quality. Thus, it was necessary to study the emission properties of those stripe-arrays to find new concepts to realize an external synchronization of the emitters. The aim was to achieve stable longitudinal and transversal single mode operation with high output powers giving a brightness sufficient for efficient nonlinear frequency conversion. For this purpose a comprehensive analysis of the stripe-array devices was done here. The physical effects that are the origin of the emission characteristics were investigated theoretically and experimentally. In this context numerical models could be verified and extended. A good agreement between simulation and experiment was observed. One way to stabilize a specific supermode of an array is to operate it in an external cavity. Based on mathematical simulations and experimental work, it was possible to design novel external cavities to select a specific supermode and stabilize all emitters of the array at the same wavelength. This resulted in stable emission with 1 W output power, a narrow bandwidth in the range of 2 MHz and a very good beam quality with M²<1.5. This is a new level of brightness and brilliance compared to other BA and stripe-array diode laser systems. The emission from this external cavity diode laser (ECDL) satisfied the requirements for nonlinear frequency conversion. Furthermore, a huge improvement to existing concepts was made. In the next step newly available periodically poled crystals were used for second harmonic generation (SHG) in single pass setups. With the stripe-array ECDL as pump source, more than 140 mW of coherent radiation at 488 nm could be generated with a very high opto-optical conversion efficiency. The generated blue light had very good transversal and longitudinal properties and could be used to generate biphotons by parametric down-conversion. This was feasible because of the improvement made with the infrared stripe-array diode lasers due to the development of new physical concepts.

Laser Beam Shaping Applications

Laser Beam Shaping Applications PDF Author: Fred M. Dickey
Publisher: CRC Press
ISBN: 1498714420
Category : Technology & Engineering
Languages : en
Pages : 430

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Book Description
This new edition details the important features of beam shaping and exposes the subtleties of the theory and techniques that are best demonstrated through proven applications. New chapters cover illumination light shaping in optical lithography; optical micro-manipulation of live mammalian cells through trapping, sorting, and transfection; and laser beam shaping through fiber optic beam delivery. The book discusses applications in lithography, laser printing, optical data storage, stable isotope separation, and spatially dispersive lasers. It also provides a history of the field and includes extensive references.

Handbook of Optical and Laser Scanning

Handbook of Optical and Laser Scanning PDF Author: Gerald F. Marshall
Publisher: CRC Press
ISBN: 0824759893
Category : Science
Languages : en
Pages : 811

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Book Description
The Handbook of Optical and Laser Scanning reveals the fundamentals of controlling light beam deflection, factors in image fidelity and quality, and the newest technological developments currently impacting scanner system design and applications. This highly practical reference features a logical chapter organization, authoritative yet accessible w

Understanding Lasers

Understanding Lasers PDF Author: Jeff Hecht
Publisher: John Wiley & Sons
ISBN: 1118210042
Category : Technology & Engineering
Languages : en
Pages : 355

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Book Description
Updated to reflect advancements since the publication of the previous edition, Understanding Lasers: An Entry-Level Guide, 3rd Edition is an introduction to lasers and associated equipment. You need only a minimal background in algebra to understand the nontechnical language in this book, which is a practical, easy-to-follow guide for beginners. By studying the conceptual drawings, tables, and multiple-choice quizzes with answers provided at the back of the book you can understand applications of semiconductor lasers, solid-state lasers, and gas lasers for information processing, medicine, communications, industry, and military systems.

Atomic and Molecular Spectroscopy

Atomic and Molecular Spectroscopy PDF Author: Sune Svanberg
Publisher: Springer Nature
ISBN: 3031047761
Category : Science
Languages : en
Pages : 698

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Book Description
A wide-ranging review of modern spectroscopic techniques such as X-ray, photoelectron, optical and laser spectroscopy, and radiofrequency and microwave techniques. On the fundamental side the book focuses on physical principles and the impact of spectroscopy on our understanding of the building blocks of matter, while in the area of applications particular attention is given to those in chemical analysis, photochemistry, surface characterisation, environmental and medical diagnostics, remote sensing and astrophyscis. The Fourth Edition also provides the reader with an update on laser cooling and trapping, Bose-Einstein condensation, ultra-fast spectroscopy, high-power laser/matter interaction, satellite-based astronomy and spectroscopic aspects of laser medicine.