SuperK SELECT multi-line tunable filter

The SuperK SELECT is a tunable multi-wavelength filter based on Acousto-optic Tunable Filter technology (AOTF). AOTFs tune over one octave of optical frequency and the SuperK SELECT allows the integration of two AOTF crystals to provide wide spectral coverage. The SuperK SELECT provides an easy to use, flexible and accurate tuning accessory to access any wavelength in the SuperK spectrum.

The SuperK SELECT can be equipped with up to two AOTFs which are powered by an RF driver. Our CONTROL software automatically recognizes and initializes the integrated AOTF(s) within SuperK SELECT.

SuperK_SELECT_outputThe SuperK SELECT is equipped with either one or two Acousto-Optic Tunable Filters (AOTF) allowing tunable filtering over two octaves in the visible, nIR or IR spectra. Each octave has its own optical output, which is either a free-space collimated beam as standard or a fiber delivered output. Up to 8 wavelengths can be continuously tuned simultaneously for each AOTF and the power of each wavelength can be controlled through the CONTROL software as well.

 

 

 

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Filter configurations

AOTF1/AOTF2   VIS-nIR
(500-900nm)
nIR1
(640-1100nm)
 nIR2
(800-1400nm)
IR
(1100-2000nm)
 UV-VIS
(400-650nm)
400-650nm /
690-900nm
400-650nm /
690-1100nm
450-650nm /
850-1400nm
450-650nm /
1100-2000nm
  VIS (1x)
(430-700nm)
- 430-670nm /
690-1100nm
450-700nm /
850-1400nm
450-700nm /
1100-2000nm
VIS (4x)
(450-700nm)
- 450-670nm /
690-1100nm
450-700nm /
850-1400nm
450-700nm /
1100-2000nm
VIS-nIR
(500-900nm)
- - 500-800nm /
850-1400nm
500-900nm /
1150-2000nm
nIR1
(640-1100nm)
- - - 640-1100nm /
1200-2000nm
nIR2
(800-1400nm)
- - - 800-1100nm /
1200-2000nm

Power Lock, external power stabilization

Power_Lock_SELECTThe Power Lock options enables you to lock the power output of the SuperK SELECT via a build in photo detector. Simply connect the detector to the External Feedback BNC connector of the SuperK. Activate locking from the control panel and the SuperK will now lock the power output of the SELECT. Power Lock monitors are available for both output ports. The long term stability of a locked output will typically be better than +/- 0.5 % (over many hours) - depending on the wavelength.

Get more information in our application note: SuperK Power Lock and modulation

Single mode fiber delivery

SuperK_CONNECTThe SuperK SELECT is compatible with our SuperK CONNECT high performance fiber delivery system that comes complete with broadband fibers and a range of termination options such as FC/PC connectors or high quality collimators. Interfacing is handled by the CONNECT fiber coupling block that ensure easy and stable single-mode coupling that can be disconnected and reconnected without alignment.

SuperK COMMAND (Fast wavelength switching and modulation option)

SuperK_COMMANDThe SuperK COMMAND enables the SuperK SELECT to perform fast wavelength sweeping or switching. Using the COMMAND, you can change wavelength or amplitude on a timescale shorter than <100 us.

Application note: SuperK COMMAND fast wavelength switching

Optical

Number of Tunable Lines 1 – 8 (per AOTF)
Filter Bandwidth* of AOTF (UV-VIS) 1,8 – 8,5nm
Filter Bandwidth* of AOTF (VIS 1x / VIS 4x) 0,5– 1,85nm / 2,5 – 8,5nm
Filter Bandwidth* of AOTF (VIS-nIR) 3,5 – 14nm
Filter Bandwidth* of AOTF (nIR 1 / nIR 2) 1,8 – 5nm / 2,6 – 9,6nm
Filter Bandwidth* of AOTF (IR) 6,4 – 19,8nm
AOTF Deflection Efficiency > 90 % (1-8 channel operation)
Polarization Linear
Output Mode Fiber or free space collimated
Mechanical Shutter Integrated for both ports
Laser Safety Interlock Integrated

* Collimated free space output; FWHM bandwidth

Mechanical

Height 67.6 mm
Width 195 mm
Length 185 mm
Weight ~4kg

Environmental

Operating temperature range 15-30 °C
Storage temperature range 5-50 °C (non condensing)
Humidity 20-80 % RH
SuperK_SELECT_technical_drawing_01 SuperK_SELECT_technical_drawing_02

Connectivity

Intelligent SuperK accessories communicate with the SuperK EXTREME via the specially designed communication bus. No need for complicated downloads or configuration when attaching the accessories. Just plug in the accessory and the SuperK automatically recognizes and installs it.  Additional accessories? No problem! The external bus can handle the connection of multiple accessories allowing the SuperK to flexibly expand its uses without any fuss. All information about the status of SuperK SELECT are available in the CONTROL software. LEDs on the side panel of SuperK SELECT inform the user optionally about the shutter position (Emission), Interlock, applied RF signal and about the supply voltage via the External bus. Moreover, the SELECT features a build in RF switch for switching between the two AOTFs without cable connection change.