Abstract
On the basis of available experimental and theoretical data the role of the Stark effect in the homogeneous line broadening of the green and blue laser lines in a hollow cathode He-Cd+ laser discharge is discussed. It is found, that at typical laser discharge parameters, for the 538 nm line the Stark line-width amounts to Δνs(538 nm)=290 MHz, which is comparable with the natural line-width broadened by collisions with neutral atoms Δνc(538 nm)=370 MHz. For the 442 nm line, however, both are significantly smaller: Δνs(442 nm)=83 MHz and Δνc(442 nm)=200 MHz. The increased homogeneous line-width can result in single mode operation for the green line, while for the blue one it does not.
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32.70.Jz; 32.60.+i
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Csillag, L., Dimitrijević, M. On the Stark broadening of the 537.8 nm and 441.6 nm Cd+ lines excited in a hollow cathode laser discharge. Appl Phys B 78, 221–223 (2004). https://doi.org/10.1007/s00340-003-1368-3
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DOI: https://doi.org/10.1007/s00340-003-1368-3