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PASSIVE Q-SWITCHES0 pages
PASSIVE Q-SWITCHES
Co2+:ZnS, Cr2+:ZnS and Cr2+:ZnSe PASSIVE Q-SWITCHES
Co²+:ZnS, Cr²+:ZnS and Cr²+:ZnSe saturable absorbers
(SA) are ideal materials for passive Q-switches of
eye-safe fiber and solid-state lasers operating in the
spectral range of 1.5-2.1 μm.
These lasers are used in numerous applications, such
as free-space communication systems, target
designation, time-of-flight range finding, surgery,
reflectrometry, laser lidars, etc.
IPG offers a large variety of diffusion-doped Co²+:ZnS,
Co²+:ZnSe, Cr²+:ZnS and Cr²+:ZnSe polycrystals
appropriate for Q-switching of the lasers operating in
the 1.5-2.1 μm spectral range.
C o 2 + :Z n S e
0.6
x10
-18
cm
2
0.8
0.4
0.2
0.0
1000
2
-18cm
2
1.0
x10
-18cm
x10
2500
C r 2+ :Z nS e
C r 2+ :Z nS
0.5
0.0
1000
2000
W avelength, nm
Samples of Cr2+: ZnS, Cr2+:ZnSe and
Co2+:ZnS Saturable Absorbers
1.5
1500
1500
2000
W avelength, nm
2500
1.0
0.5
0.0
1000
1500
2000
W avelength, nm
Ground-state Absorption Cross-sections of the
Co2+:ZnS, Cr2+:ZnS and Cr2+:ZnSe Crystals
2500
"
