NKT Photonics A203-000-001, Руководство по эксплуатации продукта

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16
AOTF crystal types
The SELECT can be specified with a variety of AOTF crystals that can filter
wavelengths from the SuperK emission spectrum from 400 to 2000 nm.
Table 1
lists the crystal models available and the combinations which can be fitted in a
dual AOTF SELECT. When dual crystals are fitted to the SELECT, the crystal
wavelength bands are selected to either extend the bandwidth or select entirely
different bands. For dual combinations shown in
Table 1
, where the bandwidth is
extended, there is a gap due to the dichroic mirrors in the SELECT. This is due to
performance of the mirrors where their reflection and transmission losses are at
the maximum.
Table 1 AOTF crystal models – wavelength bands (nanometers)
AOTF 1
AOTF 2
Single crystal SELECT – λ band
VIS-nIR
500-900 nm
nIR
640-1100 nm
nIR2
800-1400 nm
IR
1100-2000 nm
UV-VIS
400-650 nm
400-650
690-900
400-650
690-1100
400-650
850-1400
400-650
1100-2000
VIS (1x)
430-700 nm
–
–
430-670
690-1100
430-700
850-1400
430-700
1100-2000
VIS (4x)
450-700 nm
–
–
450-670
690-1100
450-700
850-1400
450-700
1100-2000
VIS-nIR
500-900 nm
–
–
–
–
500-800
850-1400
500-900
1100-2000
nIR1
640-1100 nm
–
–
–
–
–
–
640-1100
1200-2000
nIR2
800-1400 nm
–
–
–
–
–
–
800-1100
1200-2000
2
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