Page 307 - Tunable Lasers Handbook

6 Transition Metal Solid-state lasers 267

0
v)
2
.- s
-1.6
v)
-0.8 '5.
v)
Lu
0

6
N
E
w
4%
7
x
2C
.-
0
c
::
0
e
Lo
4 0
c
.-
0
2 3
E
W
0
0.30 0.50 0.70 0.90
Wavelength (micrometers)
FIGURE 22 Absoqtim and emission spectra of Cr:LiSrAlF,. (Courtesy of S.A. Payne.
L: ~wrence Livermore National Laboratory.)
Although Cr:LiCaA1F6 and Cr:LiSrAlF, have quite similar absorption spec-
tral, the emission spectra are somewhat different. Emission from Cr:LiCaAIF6
peaks about at 0.76 pm and has a linewidth of about 0.132 pm for both polariza-
tions [41]. On the other hand. emission from Cr:LiSrAlF, peaks about at 0.84 pm
and has a linewidth of about 0.197 pm for both polarizations [42]. For
Cr:LiCaA1F6, the 7c polarized emission is approximately 1.5 times as intense as
the CJ polarization. The n polarized emission spectrum for Cr:LiSrA1F6 is approx-
imately three times as intense as the CT polarized emission. Emission spectra are
shown in Figs. 21 and 22 for Cr:LiCaA1F6 and Cr:LiSrAlF,, respectively.