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State Lasers (state + laser)

Distribution by Scientific Domains
Physics and Astronomy100%

Kinds of State Lasers

  • solid state laser
    		•

    Selected Abstracts

    Set temperature dependence of fractional thermal loading and effective stimulated emission cross section of a diode double end pumped TEM00 Nd:YAG laser for micromachining application

    LASER PHYSICS LETTERS, Issue 5 2006
    S. K. Sudheer
    Abstract We discuss the set temperature dependence of fractional thermal loading and effective stimulated emission cross section of an efficient, diode double end -pumped Nd:YAG laser using two 30 W pump diodes with a CW output power greater than 8 W in polarized TEM00 mode near-diffraction limited beam suitable for micromachining applications of ultra hard materials like diamond. The temperature dependence of effective stimulated emission cross section for 4F3/2 , 4I11/2 transition and fractional thermal loading of Nd:YAG are determined where the pump power induced thermal lensing is used to make the cavity stable and in thermally stabilized solid state lasers the cavity parameters change dynamically with the pump power and hence the overlap integrals become a function of absorbed pump power. It is observed that the fractional thermal loading is increasing with increase in set temperature of laser crystal and effective stimulated emission cross section is increasing almost linearly with the increase in set temperature of laser crystal and pump laser diodes up to 30 °C the rated value of the pump diodes and thereafter the cross section decreases with increase in temperature. (© 2006 by Astro, Ltd. Published exclusively by WILEY-VCH Verlag GmbH & Co. KGaA) [source]

    High Power Diode Lasers and Current Applications

    LASER TECHNIK JOURNAL, Issue 3 2009
    Enabling features for DPSSL, laser micro processing
    In the recent years diode lasers have been established in many areas of industry and research. Especially the pumping of solid state lasers (DPSSL) is major field of application for high power diode lasers enabling solutions in many laser micro processes like cutting, sintering, structuring as well as drilling. This article reports progresses in the past as well as state of the art of high power diode lasers and describes their major applications. [source]

    High Power Diode Lasers for Industrial Applications

    LASER TECHNIK JOURNAL, Issue 3 2007
    Wolfgang Horn
    New wavelengths, high brightness and increasing reliability are breaking new ground for diode lasers. The higher brightness allows direct fiber coupling of several 100 W in 200 ,m and 400 ,m fibers and therefore i.e. the pumping of fiber lasers. Such high power fiber coupled laser diodes combined with fast beam deflection units (galvo scanners) have been implemented in industrial processes and used for quasi-simultaneous welding of polymers, heat treatment in the sub millimeter range or selective soldering in solar cell production. Besides pumping of solid state lasers, high power diode lasers become more and more a competitive tool for many applications in material processing. [source]

    Laser plasma EUV sources for Lithography , Diode pump technology offers new applications

    LASER TECHNIK JOURNAL, Issue 2 2005
    Martin Richardson
    The study of high-temperature plasmas produced by pulsed laser systems has for a long time been associated with esoteric applications such as laser fusion, x-ray lasers, space propulsion and the like. There are several reasons for this, but one practical reason was simply that the lasers required to produce these plasmas were large, unwieldy and generally singleshot devices (at least minutes between shots). This technology did not lend itself towards applications that were compact, reproducible and potentially automated. However, this is now no longer the case. High-power diode pump technology has transformed the architecture of solid state lasers, reducing by many factors the required thermal dissipation, and therefore allowing higher repetition rates. Coupled with more compact designs and reduced costs, commercial applications of high-power pulsed lasers, and even laserproduced plasmas are now emerging. Chief among the applications of laser plasmas is now its potential as a light source for what is now called Extreme UV Lithography, or EUVL. [source]