1 / 9

Makarov N.S. , mak_nick@newmail.ru

Method principle. Layer lengths selection.  (3) 0.  (3) =0. Zoom. L a (opt). H 2. H 2. H 2. L p (opt). H 2. Raman active medium. Quasi-phase matched anti-Stokes stimulated Raman scattering; Saint-Petersburg , 6 – 9 June 200 3. Makarov N.S. , mak_nick@newmail.ru.

bardia
Download Presentation

Makarov N.S. , mak_nick@newmail.ru

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Method principle Layer lengths selection (3)0 (3)=0 Zoom La(opt) H2 H2 H2 Lp(opt) H2 Raman active medium Quasi-phase matched anti-Stokes stimulated Raman scattering; Saint-Petersburg, 6 – 9June 2003 Makarov N.S., mak_nick@newmail.ru Bespalov V.G., bespalov@admiral.ru System of forward and backward multiwawe SRS equations ji – wave mismatching, gj± – steady-state Raman gain coefficient, j – frequencies of interacting waves, Ej±– complex wave amplitudes In simulations we used various Raman-active media, like hydrogen, barium nitrate, silica fiber, photonic crystals. The efficiency of anti-Stokes generation reached about 30% and practically compared to Stokes generation efficiency. The efficiency of high-order components was negligible.

  2. Principle of quasi-phase matching at SRS , rad (3)0 (3)=0 Quasi-phase matched anti-Stokes stimulated Raman scattering; Saint-Petersburg, 6 – 9June 2003 Makarov N.S., mak_nick@newmail.ru Bespalov V.G., bespalov@admiral.ru • Generalized phase on active layers input do not practically change, that in a final result provides a realization of quasi-phase matching conditions

  3. Raman gain dispersion Quasi-phase matched anti-Stokes stimulated Raman scattering; Saint-Petersburg, 6 – 9June 2003 Makarov N.S., mak_nick@newmail.ru Bespalov V.G., bespalov@admiral.ru Barium nitrate Hydrogen

  4. Backward SRS vs. QPM realization Quasi-phase matched anti-Stokes stimulated Raman scattering; Saint-Petersburg, 6 – 9June 2003 Makarov N.S., mak_nick@newmail.ru Bespalov V.G., bespalov@admiral.ru High SRS components vs. calc. precision

  5. Influence of input waves parameters on anti-Stokes generation efficiency Quasi-phase matched anti-Stokes stimulated Raman scattering; Saint-Petersburg, 6 – 9June 2003 Makarov N.S., mak_nick@newmail.ru Bespalov V.G., bespalov@admiral.ru

  6. The influence of pump wavelength on anti-Stokes generation efficiency Quasi-phase matched anti-Stokes stimulated Raman scattering; Saint-Petersburg, 6 – 9June 2003 Makarov N.S., mak_nick@newmail.ru Bespalov V.G., bespalov@admiral.ru

  7. The effective generation of anti-stokes radiation in one dimensional photonic crystals Quasi-phase matched anti-Stokes stimulated Raman scattering; Saint-Petersburg, 6 – 9June 2003 Makarov N.S., mak_nick@newmail.ru Bespalov V.G., bespalov@admiral.ru 1=1,2=13, l1=175.0000 nm, l2=287.8774 nm  =0.263 rad/cm; eff_a=30.1% 1=1,2=13, l1=175.037 nm,l2=287.870 nm =0.004 rad/cm; eff_a=29.8% Effective wave vector in one-dimension photonic crystal

  8. Conclusions Quasi-phase matched anti-Stokes stimulated Raman scattering; Saint-Petersburg, 6 – 9June 2003 Makarov N.S., mak_nick@newmail.ru Bespalov V.G., bespalov@admiral.ru • Our model of forward and backward multiwave SRS is the extension of multiwave SRS model and it may be reduced to well-known systems of forward multiwave SRS and backward SRS • For best accuracy of QPM SRS simulations it is necessary to take into account the dispersion of Raman gain coefficient • The influence of backward SRS on QPM structure realization results in the small difference between layers length of optimal QPM structure and small decreasing of resulting anti-Stokes conversion efficiency (~25% at backward and forward SRS, ~30% at forward SRS), however it is still high enough • For studying of multiwave SRS influence on QPM structure realization it is necessary to take into account the generation at least of 3 Stokes and 3 anti-Stokes SRS components • The effective anti-Stokes SRS generation occurs in a wide range of input radiation parameters • It is possible to use one-dimension photonic crystals for high effective (up to 30%) anti-Stokes SRS generation

  9. References Quasi-phase matched anti-Stokes stimulated Raman scattering; Saint-Petersburg, 6 – 9June 2003 Makarov N.S., mak_nick@newmail.ru Bespalov V.G., bespalov@admiral.ru • Armstrong J.A., Bloembergen N., Ducuing J., Pershan P.S. // Phys. Rev., 1962, 127, pp. 1918-1939. • Bespalov V.G., Makarov N.S. Quasi-phase matching generation of blue coherent radiation at stimulated Raman scattering // Optics Communications 2002, 203 (3-6), pp. 413-420. • Maier M., Kaiser W., Giordmaine J.A. Backward stimulated Raman scattering // Phys. Rev., 1969, V. 177, №2, pp. 580-599. • Raijun Chu, Morton Kanefsky, Joel Falk Numerical study of transient stimulated Brillouin scattering // J. Appl. Phys., 1992, V. 71, №10, pp. 4653-4658. • Zaporozhchenko R.G., Kilin S.Ya, Bespalov V.G., Stasel’ko D.I. Formation of the spectra of backward stimulated Raman scattering from the quantum noise of polarization of a scattering medium // Opt.&Spectr., 1999, V. 86, №4, pp. 632-639. • Bischel W.K., Dyer M.J. Wavelength dependence of the absolute Raman gain coefficient for the Q(1) transmission in H2 // J. Opt. Soc. Am. B, 1985, V. 3, pp. 677-682. • Nefedov I.S., Tretyakov S.A. Photonic band gap structure containing metamaterial with negative permittivity and permeability // Phys. Rev. E, 66, 2002, p. 036611.

More Related