Accurate (0.25 mrad) perpendicular alignment of a continuous‐wave single‐mode dye laser beam and an atomic beam

M. J. Verheijen, H. C. W. Beijerinck, N. F. Verster
1985 Review of Scientific Instruments  
Two simple methods are described for an accurate perpendicular alignment of a laser beam and an atomic beam, which is required for a velocity independent, i.e., Doppler-free interaction, of the laser beam with the atomic beam. With the first method a free running single-mode cw dye laser beam and an atomic beam are aligned perpendicular with an accuracy of 0.25 mrad. This alignment takes typically 2 h. The second method needs a laser beam that is absolutely stabilized to the investigated atomic
more » ... investigated atomic transition. With this method a 0.2-mrad accurate perpendicular alignment is obtained within only 5 min.
doi:10.1063/1.1138475 fatcat:dh6ywcw37rettpdx4fdixa56vq