[1] [1] G. Sagnac, C. R. Acad. Sci. 157, 1410 (1913).

[2] [2] R. Trunta and A. E. Siegman, IEEE J. Quantum Electron. QE-13, 955 (1977).

[3] [3] G. P. Banfi, G. Gabetta, P. G. Gobbi, and G. C. Reali, Sov. J. Quantum Electron. 20, 1203 (1990).

[4] [4] H. W. H. Lee and R. S. Hughes, Jr., Opt. Lett. 19, 1708 (1994).

[5] [5] A. Esteban-Martin, O. Kokabee, and M. Ebrahim-Zadeh, Opt. Lett. 35, 16 (2010).

[6] [6] S. C. Kumar, A. Esteban-Martin, and M. EbrahimZadeh, Opt. Lett. 36, 1068 (2011).

[7] [7] C. Malouin, A. Villeneuve, G. Vitrant, and R. A. Lessard, Opt. Lett. 21, 21 (1996).

[8] [8] D. Findlay and R. A. Clay, Phys. Lett. 20, 277 (1966).

[9] [9] D. C. Brown, T. M. Bruno, and J. M. Singley, Opt. Express 18, 16573 (2010).

[10] [10] S. Wang, X. Wang, H. Rhee, S. Meister, H. J. Eichler, and J. Chen, Opt. Commun. 283, 2881 (2010).

[11] [11] W. Koechner, Solid-State Laser Engineering (Springer, Berlin, 1999).