Download Solid-State Laser Engineering by Koechner W. PDF

By Koechner W.

This ebook, written from an commercial vantage aspect, describes the features, layout, and operation of solid-state lasers. because the identify implies, the emphasis is put on the technical elements of those structures instead of on theoretical suggestions. long mathematicalderivationshavebeenavoidedbecausethetheoryisnottreatedasanend initself,butratherservestoexplaintheexperimentalresultsobservedinthelaboratory. notwithstanding, there's suf?cient theoretical history supplied in every one bankruptcy to make the booklet self-contained. Solid-State Laser Engineering is especially meant for the training scientist or engineer who's attracted to the layout or use of solid-state lasers. The reaction from readers has proven that the excellent remedy of the topic makes the paintings helpful additionally to scholars of laser physics who are looking to complement their theoretical knowledgewiththeengineeringaspectsoflasers.Althoughnotwrittenintheformofa collegetext,thebookmightbeusedinanadvancedcollegecourseonlasertechnology. After a ancient evaluate, the booklet begins with a evaluation of the fundamental strategies of laser physics (Chap. 1). Analytical expressions of the brink situation, achieve, and output of laser oscillators are derived in Chap. three. An oscillator through a number of ampli?ers is a typical structure in pulsed solid-state laser platforms to spice up output power. power garage and achieve of ampli?ers is mentioned in Chap. four. 4 chapters care for the elemental subsystems of solid-state lasers. those are the energetic medium, the optical resonator, the pumping method, and the thermal mana- ment. houses of solid-state laser hosts and lively ions are reviewed in Chap. 2.

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The energy storage in Nd: SOAP is about five times that of YAG. 1 Overview 33 crystals can be grown inexpensively. 2 em have been grown at growth rates of 2 to 3 mmlh. 5 fringe. The main disadvantages of SOAP are a low laser damage threshold and low thermal conductivity. 21-23]. 24-28]. An outstanding property of these materials is the high gain which can be achieved as a result of the favorable position of the 4! 15 ; 2 manifold relative to the upper laser states. 28]. Thngstates, Molybdates, Vanadates, and Beryllates CaW04 was the most popular material for Nd before YAG became commercially available.

30 2. Properties of Solid-State Laser Materials iii) The crystal must have lattice sites that can accept the dopant ions and that have local crystal fields of symmetry and strength needed to induce the desired spectroscopic properties. In general, ions placed in a crystal host should have long radiative lifetimes with cross sections near w-zo cm2 • iv) It must be possible to scale the growth of the impurity-doped crystal, while maintaining high optical quality and high yield. It appears that the greatest prospect for successful growth scaling is for crystals that melt congruently at temperatures below 1300°C.

43, 44]. The terminal level in Er3+ is between 525 em - 1 for Er : YAG and 50 em - 1 for Er: glass. At room temperature all levels of the terminal 4 ! 15 ; 2 manifold are populated to some degree, thus this transition forms a three-level laser scheme with a correspondingly high threshold. Laser action is generally achieved either by lowering the temperature to depopulate the higher-lying levels of the 4 ! 15 ; 2 manifold, or by codoping the materials with trivalent ytterbium to improve the optical pumping efficiency via Yb 3+ -t Er3+ energy transfer.

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