1. la) Review articles on lasers and their applications have been collected in: Lasers and Light. Readings from Scientific American. San Francisco: W.H. Freeman and Co. 1969.
2. lb) Spectroscopic applications of lasers are discussed in: Haught, A.F., Lasers and their application to Physical Chemistry. Ann. Rev. Phys. Chem. 19, 343 (1968).
3. Görlich, P., Moenke-Blankenburg, L.:,Laser in Spektrometrie. Exp. Techn. d. Physik, Vol XVII, pp. 105 ff. 1969.
4. A detailed description of the different laser types and an extensive list of references is, for instance, given in:
5. Kleen-Müller: Laser (in German). Berlin-Heidelberg-New York: Springer 1969.