Experimental demonstration of light amplification without population inversion Back to all publications Publication date 1 January 1993 Reference W.E. van der Veer, R.J.J. van Diest and H.B. van Linden van den Heuvell, Experimental demonstration of light amplification without population inversion, Phys. Rev. Lett. 70, 3243-3246 (1993) Request this article