Written from an industrial perspective, solid state laser engineering discusses in detail the characteristics, design, construction, and performance of solid state lasers. Then a fast saturable absorber must be present that opens and closes the net gain. Lectures 1617 ch 7 optically pumped solid state lasers fall 2015. If the solid is a good quality crystal, the laser transition will be broadened homogeneously by natural and phonon broadening. Incident optical radiation causes transition from the excited state to the ground state, leading to stimulated emission. The course is based on steven simons oxford solid state basics textbook. Solid state lasers a graduate text w koechner, m bass pdf. Laser physics ii ph482582vt mirov tunable solid state lasers lecture 23. In recent years the use of diodepumped solidstate dpss lasers in oem applications has been growing rapidly.
Amplifying medium optical feedback pumping process resonator 2. Unit i laser engineering physics introduction laser stands for light amplification by stimulated emission of radiation. The main difference from conventional rod lasers or slab lasers is the geometry of the. Lecture 1 introduction to semiconductors and semiconductor. It is a gas laser built by ali javan at mit, with a wavelength of 632. Efficiency of solid state laser is very low as compared to co2 lasers.
Jun 07, 2018 at the end of this lecture, you will learn all types of solid state welding techniques along with applications. As the title implies, the emphasis is placed on the technical aspects of these systems rather than on theoretical concepts. A complete solutions manual for instructors is available from. Many favorable characteristics such as chemical stability, mechanical durability, and long operational lifetime have put these laser systems among the most preferred candidates for a wide range. The thindisk laser sometimes called thindisc laser or activemirror laser is a special kind of diodepumped highpower solid state laser, which was introduced in the 1990s by the group of adolf giesen at the university of stuttgart, germany. The course will provide a valuable theoretical introduction and an overview of the fundamental applications of the physics of solids. Solidstate lasers have lasing material distributed in a solid matrix such as the. Ultrafast laser technology and spectroscopy involves the use of femtosecond 10 15 s laser and other particle sources to study the properties of matter.
Laser science and quantum information processing laser physics prof. Alan doolittle lecture 1 introduction to semiconductors and semiconductor devices a background equalization lecture reading. A solid state laser is a laser that uses solid as a laser medium. Semiconductor light emitting diodes leds, radiative and nonradiative recombination mechanisms in semiconductors, carrier density rate equations, led figures of merit, survey of visible leds, solid state lighting, fundamentals of lighting, leds for lighting applications. Ece 5330 lectures notes and handouts cornell ece open. Unique properties of lasers and their applications youtube. Electronic materials, devices, and fabrication by prof s. Solidstate laser light amplification by stimulation emission radiation. Semiconductorbased lasers are also in the solid state, but are generally considered as a separate class from solid state lasers see laser diode. Apr 11, 2018 next the speaker will talk about the future laser lighting at the university of california at santa barbara. Basic laser physics broadening in amorphous solids in a number of important laser systems the lasing species are ions doped into a solid.
Barnes nasa langley research center hampton, va 23681 u. Fundamentals, types, and operations n n e 0 e e 1 e 3 e 0 e e 1 2 fast decay fast decay fast decay pumping pumping lasing lasing a b figure 1. Rp photonics encyclopedia solidstate lasers, diodepumped. Solid state lasers have remained a vibrant area of research because several major innovations expanded their capability. Isbn 9789537619800, pdf isbn 9789535145578, published 20100201. This course integrates theory of solid state physics with experimental demonstrations in the research physics lab. Wp for diode lasers is the highest among all other types of light emitters but. Hall demonstrated the first diode laser made of gallium arsenide gaas in 1962, which emitted radiation at 850 nm, and later in the same year nick. Parasuraman,department of metallurgy and material science,iit madras. In a solid state laser with intracavity pulse energies much lower than the saturation energy of the gain medium, gain saturation can be neglected. Solid state physics part ii optical properties of solids. In addition, solid state lasers are more compact, energy ef. Professor gunter huber for inspiring me with his laser physics lecture to start.
Solid state lasers are known to offer a much extended lifetime as compared to gas lasers, thanks to the stability of the lasing medium. Types of lasers solid state laser, gas laser, liquid laser. In recent years the use of diodepumped solid state dpss lasers in oem applications has been growing rapidly. Optomechanical devices, systems, and data storage optics, edited by gerald f. Advances in solid state lasers development and applications. Lecture 102 what limits diode laser cw output power. Major innovations are presented with emphasis focused on the laser efficiency.
Great disadvantage of solid state lasers is the divergence, which is not constant and ranges 1 milli radian to 20 milli radian. Manufacturing of ultrarobust solid state lasers using high. One of the ways we help our community of laser scientists and engineers find the best products for their projects is by hosting a free openindex product database. Free post a pdf data sheet to our openindex product research engine. Nov 30, 1975 this book, written from an industrial vantage point, describes the characteristics, design, and operation of solid state lasers. Lectures 1617 ch 7 optically pumped solid state lasers. After discussing the laser concept briefly we will investigate various types of gain media, gas, liquid and solidstate, that can be used to construct lasers and. Solid state lasers from an efficiency perspective norman p. Ions are introduced as impurities into host material which can be a glass or crystalline. Introduction to the issue on solidstate lasers article pdf available in ieee journal of selected topics in quantum electronics 1.
Laser diode module, dpss laser,fiber coupled laser for sale. One of the first solid state laser materials developed in the 1960s, nd. Due to thermal lasing in solid state lasers, the power. This process is experimental and the keywords may be updated as the learning algorithm improves. Solid state lasers solid state lasers are characterized by having as their active medium,a solid rod or slab of crystalline insulator doped with a small amount of impurity. In these lasers, glass or crystalline materials are used. With contributions from leading international experts, the book explores the latest research results and applications of solid state lasers as well as various laser systems. Experimental demonstration in the physics lab using arlaserspex 500m, ccd. A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. Pdf lecture note on crystal structures solid state physics. The extremely short pulse duration allows one to create, detect and study very shortlived transient chemical reaction intermediates and transition states. Solidstate lasers um personal world wide web server. In 1960, the first laser device was developed by t.
The orbital characteristics of the ground and first excited levels are different, and will experience a significant. Lectures 1617 ch 7 optically pumped solid state lasers fall 2017. Commonly made by doping a crystalline solid host with ions that provide the required energy states yttrium aluminium garnet nd. Typical setup of a flash lamp pumped solid state nd. The quantities n and k are collectively called theopticalconstantsof the solid, where n is the index of refraction and k is the extinction coecient. The long upper state lifetimes makes solid state lasers very suitable for q switching. Laser mounting and heatsinking lecture 104 substrate 100m ntype nclad 12 m active region 1m. Laser physics ii university of alabama at birmingham. Emphasis is placed on engineering and practical considerations. In particular, solving both current droop and thermal droop has been identified as key roadblocks to cost reduction and further improvements in solid state lighting.
Output power is also not very high as in co2 lasers. The term laser is an acronym for light amplification by. However, these advantages can not be realised in practice if the laser assembly in itself is nei. Upperlevel undergraduate course taught at the university of pittsburgh in the fall 2015 semester by sergey frolov. Yvo 4, was soon rediscovered and became a key element of low and mediumpower diodepumped solid state lasers dpssls, owing to its unique high emission crosssection and large pump absorption coefficient at 808 nm. To help avoid confusion in terminology with the semiconductor laser, solid state lasers are sometimes now referred to as doped insulator lasers. Home package solid state lasers a graduate text w koechner, m bass pdf. Phys 446 solid state physics information services and. A solid state laser is a laser that uses a gain medium that is a solid, rather than a liquid as in dye lasers or a gas as in gas lasers. Lecture 101 high power diode lasers low power lasers below tenth of mw.
710 121 1065 791 1294 1311 809 441 189 329 174 387 508 1142 1509 417 701 1072 400 1010 1170 834 275 132 281 1505 477 99 1323 1129 656 594 960 1095 250 652 983 1040 147 773 872 1197 743 1365 1144