Abstract
This paper describes the results of a detailed experimental study of an electron-beam-pumped, high Kr concentration KrF laser. The excitation rate is 1.4 MW/cm3 for 1 atm of Kr gas. The formation efficiency of KrF* and extraction efficiency are estimated using calculated values of saturation intensity and g0/α0, the ratio of small-signal gain to saturable absorption, together with measured values of g0 and the ratio of g0 to nonsaturable absorption (αn). Although the highest formation efficiency of 24% is observed at 99.7% Kr concentration, the effect of finite vibrational-relaxation rate significantly decreases the KrF* density accessible to lasing at high Kr concentration due to the shorter lifetime of KrF*. KrF* vibrational-relaxation rates of 4×10-11 and 5×10-11 cm3 s -1 are determined for Ar gas and Kr gas, respectively. A decrease of g0/α0 and g0/α n resulting in low extraction efficiency is observed at high Kr concentration due to the relatively high α0 and αn. The intrinsic efficiencies are 11, 11.8, and 9% for 1 atm mixtures at 10, 50, and 99.7% Kr, respectively.
| Original language | English |
|---|---|
| Pages (from-to) | 476-488 |
| Number of pages | 13 |
| Journal | Journal of Applied Physics |
| Volume | 61 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 1987 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)
Cite this
Parametric studies of an electron-beam-pumped krypton-rich KrF laser. / Kannari, Fumihiko; Shaw, M. J.; O'Neill, F.
In: Journal of Applied Physics, Vol. 61, No. 2, 1987, p. 476-488.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Parametric studies of an electron-beam-pumped krypton-rich KrF laser
AU - Kannari, Fumihiko
AU - Shaw, M. J.
AU - O'Neill, F.
PY - 1987
Y1 - 1987
N2 - This paper describes the results of a detailed experimental study of an electron-beam-pumped, high Kr concentration KrF laser. The excitation rate is 1.4 MW/cm3 for 1 atm of Kr gas. The formation efficiency of KrF* and extraction efficiency are estimated using calculated values of saturation intensity and g0/α0, the ratio of small-signal gain to saturable absorption, together with measured values of g0 and the ratio of g0 to nonsaturable absorption (αn). Although the highest formation efficiency of 24% is observed at 99.7% Kr concentration, the effect of finite vibrational-relaxation rate significantly decreases the KrF* density accessible to lasing at high Kr concentration due to the shorter lifetime of KrF*. KrF* vibrational-relaxation rates of 4×10-11 and 5×10-11 cm3 s -1 are determined for Ar gas and Kr gas, respectively. A decrease of g0/α0 and g0/α n resulting in low extraction efficiency is observed at high Kr concentration due to the relatively high α0 and αn. The intrinsic efficiencies are 11, 11.8, and 9% for 1 atm mixtures at 10, 50, and 99.7% Kr, respectively.
AB - This paper describes the results of a detailed experimental study of an electron-beam-pumped, high Kr concentration KrF laser. The excitation rate is 1.4 MW/cm3 for 1 atm of Kr gas. The formation efficiency of KrF* and extraction efficiency are estimated using calculated values of saturation intensity and g0/α0, the ratio of small-signal gain to saturable absorption, together with measured values of g0 and the ratio of g0 to nonsaturable absorption (αn). Although the highest formation efficiency of 24% is observed at 99.7% Kr concentration, the effect of finite vibrational-relaxation rate significantly decreases the KrF* density accessible to lasing at high Kr concentration due to the shorter lifetime of KrF*. KrF* vibrational-relaxation rates of 4×10-11 and 5×10-11 cm3 s -1 are determined for Ar gas and Kr gas, respectively. A decrease of g0/α0 and g0/α n resulting in low extraction efficiency is observed at high Kr concentration due to the relatively high α0 and αn. The intrinsic efficiencies are 11, 11.8, and 9% for 1 atm mixtures at 10, 50, and 99.7% Kr, respectively.
UR - http://www.scopus.com/inward/record.url?scp=0002242815&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0002242815&partnerID=8YFLogxK
U2 - 10.1063/1.338247
DO - 10.1063/1.338247
M3 - Article
AN - SCOPUS:0002242815
VL - 61
SP - 476
EP - 488
JO - Journal of Applied Physics
JF - Journal of Applied Physics
SN - 0021-8979
IS - 2
ER -