01_LightSources_1759-1765.qxd.P:1759-1765
7/26/11
5:03 PM
Page 1765
Imaging
CHAPTERS
Extended Broadband SLD Light Source for OCT Systems:
>170 nm FWHM
Features
I Dual SLD Light Sources for Broadband
Spectral Output
OCT Components
I 1325 nm Center Wavelength
I Fiber-Coupled Power >10 mW
I Independent Enable/Disable and Output Power
LS2000B
Extended Broadband SLD Light Source
for High Resolution OCT Systems
M
Laser Scanning
Microscopy
Microscopy
Components
OCT Imaging
Systems
Adaptive Optics
SECTIONS M
Control for Each SLD
I Remote Control via USB
Light Sources
In OCT imaging systems, the optical bandwidth of the light
source is inversely proportional to the axial resolution. To
provide higher axial resolution than currently possible with a
single SLD, we offer an extended broadband SLD light
source, which contains two SLDs.
Balanced Detectors
SPECIFICATIONS
Channels
1
2
SLD A
SLD B
A+B
1225 nm
1340 nm
1300 nm
FWHM Wavelength (Typical)
80 nm
110 nm
200 nm
10dB Bandwidth (Typical)
100 nm
150 nm
235 nm
SLD Output
The output of the two fiber-pigtailed SLDs are fiber coupled
to provide a single extended bandwidth (>170 nm) light
source. This extended light source can be used in OCT
imaging systems to produce images with a resolution of
~3 µm in biological (n = 1.33) samples.
Central Wavelength (Typical)
Fiber-Coupled Power
The LS2000B extended broadband SLD light source
packages the matched-pair SLDs into a single compact
housing measuring 12.6" x 10.6" x 2.5" (320 mm x 269 mm
x 64 mm). The LS2000B front panel provides independent
control of the output of each SLD. In addition, each SLD has
a front panel enable/disable output button as well as a reset to
the factory configuration.
There are four FC/APC fiber connectors in the front panel.
Two are for access to the output of each SLD, while the other
two provide extended bandwidth output from the combined
pair of SLDs. Each combo-channel provides a bandwidth in
excess of 170 nm and output power greater than 10 mW.
FWHM
-110 nm
30
14.00 to 30.00 °C
Operating Temperature
10 - 30 °C
Fiber/Connector
SMF-28e+, FC/APC
Optical
Switches
1250
1300
1350
Output: SLD B
2x2
Coupler
Ch3 SLD A+B
< 3dB
20
*
10
1200
Output: SLD A
Optical
Switches
SLD A
Output: SLD A + SLD B
Output: SLD A + SLD B
Sample SLD Emission
20
0
1150
Optics
0 - Full Power
Temperature Control
Emission Intensity (µW)
Emission Intensity (µW)
40
Scanning Mirrors
Resolution Targets
Adjustment Range
SLD B
FWHM
-80 nm
Fiber Components
Polarization
Controller
Controller Characteristics
70
50
4
<0.2% (Source Dependent)
Sample SLD Emission
60
3
>10 mW per channel
Noise, Typical
SLD B
SLD A
Interferometers
Matched-Pair SLD Characteristics
1400
1450
Ch4 SLD A+B
*
15
10
FWHM ~ 200 nm
5
0
1150
1200
1250
1300
1350
1400
1450
Wavelength (nm)
Wavelength (nm)
* Spectral noise at longer wavelengths are artifacts caused from water absorption in the optical spectrum analyzer
ITEM #
LS2000B
$
$
12,900.00
£
£ 9,288.00
€
€ 11.223,00
RMB
¥ 102,813.00
DESCRIPTION
Extended Broadband SLD Light Source, 1325 nm, >170 nm
www.thorlabs.com
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