Reflectivity and spectral properties of a thick reflection grating are discussed for the second-order Bragg diffraction regime. Analytical expressions for the reflection and gain coefficients are obtained with the help of the developed theory. A procedure is proposed for determining the wavelength of laser oscillations generated in an optically active grating. The influence of the second harmonic of dielectric permittivity spatial modulation on reflection and spectral characteristics of a grating was also analyzed. Comparison of the approximate results obtained by the proposed approach and by the numerical solution is carried out, and their excellent agreement is demonstrated.
© 2012 Optical Society of America
Diffraction and Gratings
Original Manuscript: September 22, 2011
Revised Manuscript: January 30, 2012
Manuscript Accepted: February 14, 2012
Published: April 11, 2012
Volodymyr M. Fitio and Tatiana N. Smirnova, "Analysis of light wave diffraction and amplification by reflection grating operating in the second-order Bragg regime. 2. Reflectivity and spectral characteristics of a grating," J. Opt. Soc. Am. B 29, 944-949 (2012)