<title>A sealed-off strontium vapor laser</title>

Strontium atom laser excited by nanosecond pulsed longitudinal He-SrBr2discharge

“…During the investigation of the SrBr 2 vapour laser the discharge tube has operated about 100 h with a lasant expenditure of about 0.25 g per hour. The results obtained are two orders of magnitude higher than those obtained in [6] and they are comparable with those achieved with metal strontium as a lasing medium [4].…”

“…Multi-watt pulsed laser oscillation of different pumping mechanisms was obtained at several strontium atom and univalent ion lines in the range from 416 nm to 6.45 µm through a pulsed longitudinal discharge in helium or neon buffer gas [2,3]. In the infrared (IR) spectral range laser oscillation at two Sr ion lines (1.03 and 1.09 µm) and seven Sr atom lines (2.06, 2.20, 2.69, 2.92, 3.01, 3.07 and 6.45 µm) was reported [2,4]. A strontium vapour laser operating at a 6.45 µm laser line was first described in [2] with a relatively high average output power of 1.2 W. Further work on an improvement in the output parameters of the Sr atom laser was carried out through an active volume scaling.…”

“…A strontium vapour laser operating at a 6.45 µm laser line was first described in [2] with a relatively high average output power of 1.2 W. Further work on an improvement in the output parameters of the Sr atom laser was carried out through an active volume scaling. A sealed-off strontium vapour laser for medical application was presented in [4].…”

A multiwave CuBr and PbBr2 laser with a sectioned active volume

“…The dissociation energy of a PbBr 2 molecule (5.4 eV) is higher than that of a CuBr molecule (2.5-3 eV). It is noted in [4,5] that the near-cathode zone is characterized by a higher power release and higher energy levels are excited in comparison with the near-anode zone. Hence, considering the difference in the active medium parameters, PbBr 2 is on the cathode side.…”

The strontium-vapor laser pumping efficiency under running-wave excitation

“…An investigation into a He-Sr laser has shown the presence of typical lasing lines on RM transitions of atomic and ionic strontium [19] for a total average lasing power of ~4 W. A 10% Ne additive to He increased the average lasing power up to ~5 W (see also [20]). A proof of running excitation wave generation was the 10-15% difference in the measured average lasing power between the positions of the totally reflecting mirror (at the cathode or the anode end of the gas-discharge tube).…”