Broadband sources for optical coherence tomography

The SuperK OCT sources are broadband low noise sources designed for optical coherence tomography. Paired with a broadband spectrometer, these sources gives the same performance as Ti:Sapphire-based OCT systems at much low cost, lower foot-print and with great mobility and robustness.

The SuperK EXTREME OCT series shares the same robust platform as our standard SuperK EXTREME systems and can be run 24/7 if needed.

The sources can be used for optical coherence tomography both in the visible wavelength range as well as in the 1300 nm region.

The ultra-broad output and low noise makes SuperK supercontinuum lasers ideal OCT sources when micron resolution is needed or when you need a special wavelength range.

Features

  • 400-2400 nm single mode output
  • Large bandwidth for micron resolution OCT systems
  • Low noise
  • Robust and maintenance free
  • Long lifetime of thousands of hours

 

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Our OCT optimized supercontinuum sources comes in two different colors - red and white.

 Model Visible Power
EXR-9 OCT 900 mW
EXW-4 OCT 400 mW
EXU-6 OCT 600 mW
SuperK EXTREME OCT typical output

SuperK EXTREME OCT typical RIN

Optical

Master seed laser pulse ~5 ps
Typical RIN See plot
Polarization Unpolarized
Beam output Gaussian, single mode
M2 < 1.1
Output options Collimated (standard)
Divergent (on request)
Length of output fiber 1.5 m
Beam diameter ~1 mm at 530 nm
~2 mm at 1100 nm
~3 mm at 2000 nm
Beam Divergence (half angle) < 5 mrad
Beam Pointing Accuracy1) < 1 mrad
Beam Pointing Stability < 50 µrad
Typical single mode fiber coupling efficiency >70 %

Mechanical / Electrical

Computer Interface USB 2.0
Operation Voltage 100-240 VAC 50/60 Hz
Power Consumption
Door Interlock Connector 2) 2-pin LEMO
External Bus interface 3) 15-pin sub-D
System Cooling Air Cooled
Operation Temperature +18o to +30oC
Storage Temperature -10o to +60oC
Dimensions (WxHXL) 440x243x380 mm3
Weight 18 kg (19 kg with variable rep rate)

Environmental

Operating temperature range 15-30 °C
Storage temperature range 5-50 °C (non condensing)
Humidity 20-80 % RH

1) Measured relative to the mechanical axis running through the center of the collimator
2) The SuperK Extreme is a Class 4 laser and is required to be connected to a door interlock/circuit
3) External communication and power supply port for accessories

SuperK_EXTREME_technical_drawing_front

SuperK_EXTREME_technical_drawing_top

SuperK_EXTREME_technical_drawing_side

Low noise

The SuperK EXTREME OCT series is the supercontinuum laser on the market with the lowest noise. It is optimized for low noise performance to yield high-contrast low-noise images in OCT systems and in the performance matches that of large bulky Ti:Sapphire lasers.

Below are shown two OCT images of a human eye. The image on the right is recorded using a SuperK EXTREME OCT source, while the image on the left is obtained using a Ti:Sapphire laser. Both images are recorded by Angelika Unterhuber from Prof. Dr. Wolfgang Drexlers group at Medical University Vienna.

TiSa_vs_Supercont

 

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