The IRis-core – turnkey mid-IR dual-comb source
The advantages of dual-comb spectroscopy, now also in your application
Dual-comb spectroscopy is increasingly employed in stand-off detection, open path detection and other applications due to its merits in speed, suppression of background radiation and high optical powers.
The IRis-core is an ideal basis for the setup of such a system in the mid-IR range: It offers two overlapping free-running QCL-based frequency comb lasers in a single system. The system outputs already co-aligned beams and comes with a set of drive instructions with factory-characterized heterodyning conditions. The system comes complete with drive electronics and a control computer with a graphical user interface.
IRis-core: high power modular dual-comb source for the mid infrared range.
Modular approach
IRis-core: high power modular dual-comb source for the mid infrared range.
The IRis-core is a receiving bay and driving and control electronics for IRsweep laser modules. In this modular approach, it is possible to exchange the dual-comb laser modules to switch laser wavelength.
The laser modules are compatible with the laser modules of IRsweep’s IRis-F1 dual-comb spectrometer and ensure maximum flexibility in future applications. Suitable detection systems with data-processing capabilities that are integrated can also be provided with the system.
Optional detection system
The IRis-detect is an optional detection system that is available for the IRis-core. It consists of two high bandwidth thermoelectrically cooled MCT detectors for sample and reference channels along with a fast sampling system to collect, process and store the multi-heterodyne data. Data can be processed and represented as transmission or absorption by the system and triggering and typical measurement schemes are readily available. Examples are short time-resolved acquisitions covering time ranges from microseconds to tens of milliseconds and time-averaged data that can be acquired over longer time scales.
Processing is done live on the detection system, which is a requirement to achieve long measurements beyond tens of milliseconds, due to very large raw data rates. Data processing includes a proprietary coherent averaging algorithm optimized to reduce systematic errors including QCL specific drift correction and comb state analysis. The final data is stored in the open HDF5 format. The detection system is controlled through a graphical user interface allowing live inspection of the data in time and frequency domains. The graphical user interface can also control the IRis-core dual-comb emitter system.
IRis-core benefits
Turnkey co-aligned dual-comb system
Includes drive electronics
Controlled via
GUI on PC
Compatible with IRis-F1 spectrometer laser module
System specifications
Laser platform
Quantum Cascade Laser
Light source
Co-aligned frequency comb sources
Modularity
Yes: laser source exchangeable and compatible with IRis-F1
Center wavenumbers
2200 cm-1 (4.5μm) – 900 cm-1 (11.1μm) See the laser availability: here
Spectral coverage
typically 60 cm-1 per exchangeable laser source
Optical power
20 mW – 300 mW
Spectral resolution
<10 MHz (0.0003 cm-1)
Spectral sampling
0.16 cm-1 – 0.5 cm-1
User interface
Graphical user interface on PC platform
Detection system
Optionally available, 1 GHz bandwidth with spectrum recovery
Power consumption
110 – 230V AC, 700W typical including electronics
Cooling requirement
Cooling water with ±0.05 K stability
Optional detection system: specifications
Detector type
2x MCT
Cooling
Thermo-electrically
Bandwidth
> 900 MHz
Data acquisition
Dual-channel 14 bit data acquisition
Data processing
Spectrum-recovery to transmission or absorption. Proprietary coherent averaging algorithm optimized to reduce systematic errors including QCL specific drift correction
Data export format
HDF5 (open format)
Live data processing while acquisition
yes
What our customers say about IRis-core
IRsweep did a wonderful job outlining the laser operations for us on site and the lasers performed extremely well.
J.L., Mission Support and Test Services, USA
Laser module availability
Lasers modules of both form factors, LMA and LMC may be used in the IRis-F1. You can find the module availability here.
Comparing IRis spectrometers
| IRis-F1 | IRis-core | IRis-C | |
|---|---|---|---|
| Turn-key dual-comb spectrometer |  |
|
|
| Time resolution | 1 µs |
1 µs |
1 ms /10 µs1 / 1 µs2 |
| Optical power | Up to 500 mW |
Up to 500 mW |
50 mW typically |
| High resolution available (< 0.0005 cm-1) | |
|
 |
| Phase sensitive configuration available | |
|
|
| Bay for laser module A | |
|
|
| Bay for laser module C | With adaptor |
With adaptor |
|
| Reference detector pre-aligned | |
|
|
| Sample detector pre-aligned | |
|
|
| Instrument purgeable | |
With customization |
|
| Sample path purgeable | |
With customization |
With customization |
1 with upgrade
2 with upgrade
Safety:
All statements regarding the safety of operation and technical data only apply when the instrument is operated correctly according to its specifications. The safety of any system incorporating the equipment is the responsibility of the assembler of the system. Inappropriate use of the instrument t may result in permanent eye damage. The instrument falls under the Laser Class given in the General Specifications table that is outlined by the IEC document 60825-1.
Laser Radiation: DO NOT STARE INTO BEAM; CLASS 3B LASER PRODUCT
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