Regenerative Optical Helium-Neon Amplifier Lebedeva, V. V. ; Odintsov, A. I. ; Lebedev, I. V. ; Andriyakhin, V. M. ; Gudovich, E. S. ; Ponomareva, I. P. Abstract Publication: Optics and Spectroscopy Pub Date: March 1966 Bibcode: 1966OptSp..20..277L