Page 169 - Tunable Lasers Handbook

148 Charles Freed

TABLE 15 Small-Signal Gain Coefficients a, and Saturation Parameters I, for a
4He-12C 1807--14N,-Xe Mixture0
-

0.27 22 0.060
0.30 24 0.07 1
0.30 30 0.091
0.28 24 0.069
0.21 22 0.052

0.24 23 0.051
0.26 27 0.071
0.27 29 0.079
0.26 22 0.059
0.23 20 0.047

0.66 30 0.20
0.71 33 0.24
0.73 39 0.28
0.67 36 0.24
0.60 25 0.15
28
0.60 0.17
0.61 30 0.19
0.64 33 0.21
0.62 31 0.19
0.50 28 0.14
aReprinted with permission from Freed er al. [125]. 0 1982 IEEE.

(0200) levels. The gain coefficient ratios measured experimentally were in good
agreement with matrix element calculations. Substitution of IjN, instead of "N,
did not significantly improve the results obtained for 13C1607 and 14C1602. The
small-signal gain coefficients and saturation parameters tabulated in Tables 14
through 18 may only serve as guidelines in the design of sealed-off CO, isotope
lasers and amplifiers. The actual values that may be obtained would depend on
the optimization procedure since the design parameters required for maximum
gain, highest power, greatest efficiency, and longest sealed-off life are generally
quite different. The products a,Z, listed in the tables give a conservative but good
indication of the fundamental mode power per unit length that can be achieved
with sealed-off CO, lasers.