Abstract
Generation of terahertz (THz) radiation by nonlinear mixing of laser frequencies in GaAs crystal is considered for the case of free and guided propagation of THz waves. In the first case the strong diffraction of the THz radiation leads to the deviation from the known square-law growth of the generator power with increasing crystal length, In the second case the spatial divergence of the exciting laser beam results in the appearance of a maximum in the generated power dependence on the radius of the nonlinear waveguide. According to estimations, the optimal radius of the laser beam is 18 μm for the waveguide length of 6 mm and the maximal generated THz power is ∼27 W at the laser beam power of 10 kW.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Tonouchi, M., Nature Photon., 2007, vol. 1, p. 97.
Siegel, P.H., IEEE Trans. Microwave Theory Tech., 2002, vol. 50, p. 910.
Wang, T.D., Lin, S.T., Lin, Y.Y., Chiang, A.C., and Huang, Y.C., Opt. Express, 2008, vol. 16, p. 6471.
Vodopyanov, K.L. and Avetisyan, Yu.H., Opt. Lett., 2008, vol. 33, p. 2314.
Powers, P.E., Alkuwari, R.A., Haus, J.W., Suizu, K., and Ito, H., Opt. Lett., 2005, vol. 30, p. 640.
Nishizawa, J., et al., IEEE Photon. Tech. Lett., 2007, vol. 19, p. 143.
Yariv, A., Quantum Electronics, New York: Wiley, 1989.
Haus, J.W. et al., Laser Physics, 2004, vol. 14, p. 635.
Liu, X., Zhang, H., and Zhang, M., Opt. Express, 2002, vol. 10, p. 83.
Ding, Y.J., IEEE J. Sel. Top. Quantum Electron., 2004, vol. 10, p. 1171.
Creeden, D. et al., IEEE J. Sel. Top. Quantum Electron., 2007, vol. 13, p. 732.
Avetisyan, Yu.H., Martirosyan, R.M., Mirzabekyan, E.G., and Poghosyan, P.S., Kvantovaya elektronika, 1978, vol. 5, p. 659.
Nikoghosyan, A.S., Laziev, E.M., Martirosyan, R.M., Hakhoumian, A.A., Chamberlain, J.M., Dudley, R.A., and Zinovev, N.N., Proc. SPIE, 2006, vol. 6257, p. 201.
Thompson, D.E. and Coleman, P.D., IEEE Trans. Microwave Theory Tech., 1974, vol. 22, p. 995.
Berger, V. and Sirtori, C., Semicond. Sci. Technol., 2004, vol. 19, p. 964.
Akhmanov, S.A. and Nikitin, S.Yu., Fizicheskaya optika (Physical Optics), Moscow: Nauka, 2004.
Suhara, T. and Fujimura, M., Waveguide Nonlinear-Optics Devices, Berlin: Springer, 2003.
Marcatili, E.A., Bell Syst. Tech. J., 1969, vol. 48, p. 2071.
Vodopyanov, K.L. et al., Appl. Phys. Lett., 2006, vol. 89, p. 141119.
Author information
Authors and Affiliations
Additional information
Original Russian Text © Yu.H. Avetisyan, A.H. Makaryan, V.R. Tadevosyan, K.L. Vodopyanov, 2009, published in Izvestiya NAN Armenii, Fizika, 2009, Vol. 44, No. 4, pp. 239–249.
About this article
Cite this article
Avetisyan, Y.H., Makaryan, A.H., Tadevosyan, V.R. et al. Analysis of generation of terahertz radiation by nonlinear mixing of laser frequencies in GaAs crystal. J. Contemp. Phys. 44, 161–167 (2009). https://doi.org/10.3103/S1068337209040021
Received:
Published:
Issue Date:
DOI: https://doi.org/10.3103/S1068337209040021