I correct an error made by Vega et al. [Appl. Opt. 42, 4152 (2003)], who derived the spectral dispersion properties of a virtually imaged phased-array etalon using a ray-based, multibounce interference analysis. I demonstrate that the corrected dispersion law is in agreement with the results obtained by paraxial wave theory [Xiao et al., IEEE J. Quantum Electron. 40, 420 (2004)].
© 2012 Optical Society of America
Diffraction and Gratings
Original Manuscript: August 9, 2012
Manuscript Accepted: August 24, 2012
Published: November 29, 2012
Daniel J. Gauthier, "Comment on “Generalized grating equation for virtually imaged phased-array spectral dispersers”," Appl. Opt. 51, 8184-8186 (2012)