Lasers enabling technology Can You See the light? mechanics: 5$ batteries: 5$ display ete. 5$ electronics: 5$ 5 Ct. laser: enables clean sound and data storage Financial Position of lasers Lasers in Science and Engineering 1950196019701980199020002010 Nonlinear Optical Effect Second harmonic P=EyE (For linear medium) Generation Where e is permitivity of medium and e is electric P=Ex'E+X2E2+XE3+.( For nonlinear Where ]I is linear susceptibility tensor, x 2is quadratic tensor ( 3X3X3 matrix) and x is cubic 961 Franken found the second harmonic generation tensor (cubic matrix with 3X3 matrix at each which generate a new field lattice point)8 mechanics: 5$ batteries: 5$ display etc. 5$ electronics: 5$ profit:10$ Lasers = enabling technology 5 Ct-laser: enables clean sound and data storage Can You See the Light? Dentists use laser drills Bad eyesight can be corrected by optical surgery using lasers CD-Audio is read by a laser Tattoo removal is done using lasers CD-Rom discs are read by lasers Laser pointers can enhance presentations Bar codes in grocery stores are scanned by lasers Video game systems such as PlayStation 2 utilize lasers DVD players read DVD’s using lasers Airplanes are equipped with laser radar Military and Space aircraft are equipped with laser guns Laser tech. is used in printers, copiers, and scanners Financial Position of Lasers Dow-Jones 0 2 4 6 8 10 1997 1998 1999 2000 2001 manufacturing & medical applications billion $ data storage & telecom 2002 Lasers in Science and Engineering 0 100000 200000 300000 1950 1960 1970 1980 1990 2000 2010 Physics Engineering 1 st laser Number of publications now P = eceE (For linear medium ) Where e is permitivity of medium and ce is electric susceptibility P = e(c1 E + c2 E2 + c3 E3 +… .) (For nonlinear medium) Where c1 is linear susceptibility tensor, c2 is quadratic tensor (3X3X3 matrix) and c3 is cubic tensor (cubic matrix with 3X3 matrix at each lattice point). Nonlinear Optical Effect linear nonlinear P E Second Harmonic Generation 1961 Franken found the second harmonic generation which generate a new field ¾¾ nonlinear optics