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LASER

Nyru; vd;why; vd;d?. LASER. L – LIGHT A – AMPLIFICATION S – STIMULATED E – EMISSION R - RADIATION. L A S E R. L A S E R. LIGHT AMLIFICATION OF STIMULATED EMISSION OF RADIATION vd;gJjhd; Nyru; vd;gjd;; tpupthf;fk;. mjhtJ>

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LASER

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  1. Nyru; vd;why; vd;d? LASER

  2. L – LIGHTA – AMPLIFICATIONS – STIMULATEDE – EMISSION R - RADIATION L A S E R

  3. L A S E R LIGHT AMLIFICATION OF STIMULATED EMISSION OF RADIATION vd;gJjhd; Nyru; vd;gjd;; tpupthf;fk;. mjhtJ> “fjpu;g;Gfspd; Cf;fpa fhyyhy; Vw;gLj;jg;gLk; xspg;ngUf;fk;” vd;gJ ,jd; nghUshFk;.

  4. xspf;fjpu; vd;why; vd;d? mUl;lg;gl;l epiyapYs;s mZnthd;W me;epiyapypUe;J Fiwe;jNthu; rf;jp epiyf;F khWk;NghJ xspaiynahd;W fhyg;gLk;. ,g;gbahff; fhyg;gl;l mjpf njhifahd miyfspd; $l;lNk xspf;fjpuhFk;.

  5. Nyru; fjpu; vd;why; vd;d? rhjhuz xspf;fjpu; xd;W ,yl;rf;fzf;fhd jdpg;gl;l xspaiyfis cilajhf ,Uf;Fk;. ,j;jifa xspaiyfs; xUq;fpizAk;NghJ mf;fw;iwapd; nrwpT mNjasT jdpg;gl;l xspaiyfis cila rhjhuz xspf;fjpupd; nrwptpYk; ,yl;rk; klq;F mjpfkhdjhf ,Uf;Fk;. xUq;fpiztdthd xspaiyfis mZf;fs; fhYtjw;F Cf;fg;gLj;Jk; nraw;ghl;bd; tpisNt “Nyru; fjpu;fshFk;.”

  6. vt;thWNyru; njhopw;gLfpd;wJ?

  7. He-Ne laser He Ne E’3 E1 E’2 1.96eV 20.66eV 20.61eV 18.70eV E’0 E0

  8. Nyrupd; gpuNahfq;fs;

  9. Laser Animation

  10. Semiconductor Laser Semicondutor Laser

  11. History 1958 - Arthur L. Schalow and Charles H. Townes invent the laser and publish a paper title “Infared and Optical Masers” 1961 - First continuous operation of an optically pumped solid state laser 1963 - Quantum well laser first suggested by H.Kroemer from the U.S. and Kazrinov and Alferov from the Soviet Union. 1975 - First quantum well laser operation made by J.P. Van der Ziel, R, Dingle, R.C Miller, W. Wiegmann, and W.A. Nordland, Jr. 1977 - R.D. Dupuis, P.D. Dapkus, N. Holonyak submitted paper demonstrating first quantum well injection laser 1994 - Quantum cascade lasers first developed

  12. “LASER”

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