1. G.C. Bjorklund: IBM Invention Disclosure SA 8790135 (March 1979) G.C. Bjorklund: Opt. Lett.5, 15 (1980) G.C. Bjorklund: U.S. Patent 4,297,035 (November 1981)
2. This technique was independently suggested by R.W.P. Drever as a means for servo-locking a tunable laser to a high finesse optical cavity. It was first experimentally implemented for this purpose by R.W.P. Drever, J.L. Hall, F.V. Kowalski, J. Hough, G.M. Ford, A.J. Munley (September 1979) and then by M. Prentiss, B. Peuse, G. Sanders, S. Ezekiel: Research Laboratory of Electronics, Progress Report No 123 (January 1981) (Massachusetts Institute of Technology, Cambridge, MA)
3. R.V. Pound: Rev. Sci. Instrum.17, 490 (1946)
4. B. Smaller: Phys. Rev.83, 812 (1951)
5. J.V. Acrivos: J. Chem. Phys.36, 1097 (1962)