Page 195 - Tunable Lasers Handbook

5 Dye Lasers 173

TABLE 1 Transition Cross Sections for Rhodamine 66

Cross section Wavelength
Symbol (em') (nm) Reference

OON 0.31 x 10-16 308 [101
OGN 0.31 Y, 10-16 331 POI
% 1 1.66 x 10-16 510 p11
2.68 x 10-16 514.5 [201
1.5 x 10-16 530 [191
512 -0.1 x 10-16 510 [27]
0.3 x 10-16 530 [231
oe 1.86 X 10-16 572 P11
1.32 x 10-16 590 POI
1.3 x 10-16 600 [191
O'o1 $1 x 10-17 580 [15.13!
1 x 10-19 600 [191
4, 1 x 10-17 600 [191
OY2 1 x 10-1' 530 [191
Ti 6 x 10-1' 590 t201
1:
1 x 10-17 600 t191

TABLE 2 Transition Rates and Decay Times for Rhodamine 6G

Rate Decaj time
Sjmbol (sec-1) (sec) Reference
%, 2x 10'
3.4 x 106
8.2 x 106
2.5 x 10"
'TS
1.1 x 10-7
0.5 x 10-7
1.8 x 10-9
'IO
3.5 x lo-'
5! -10-11

[38,31]. The dye used by these authors was TBS and emission was near 400 nm.
For blue dyes such as coumarin 120 efficiencies of up to 41%, have been
reported under XeCl laser excitation [42].