Sulfur Dioxide Detection (SO2)
Application areas of laser-based sulfur dioxide detection
nanoplus lasers for sulfur dioxide detection are used for various applications including:
- Safety: Emission control
Tunable diode laser spectroscopy allows measuring SO2 with up to ppb precision in real time and in situ. Providing long-term stability and requiring little maintenance, nanoplus lasers are suitable for operation in harsh environments.
Standard wavelengths for sulfur dioxide detection
nanoplus offers various wavelengths to target the vibrational-rotational bands of sulfur dioxide. Literature recommends the following wavelengths for sulfur dioxide detection:
Select your wavelength for sulfur dioxide detection
Above wavelengths as well as further customized wavelengths for sulfur dioxide detection are available from nanoplus.
When you choose your wavelength, you have to consider your product set up, environment and nature of the measurement.
These factors influence the optimum wavelength for your application. Do have a look at the Hitran Database to further evaluate your choice of wavelengths. Our application experts are equally happy to discuss with you the most suitable wavelength for your application.
Let us know the wavelength you require with an accuracy of 0.1 nm!
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Related information for laser-based sulfur dioxide detection
Specifications & Mountings
Applications
Papers & Links
The following tables analyse the typical specifications of the standard wavelengths for SO2 detection.
| electro-optical properties of 2460.0 nm DFB laser diode | symbol | unit | minimum | typical | maximum |
|---|---|---|---|---|---|
| standard wavelength | λ | nm | 2460.0 | ||
| absorption line strength | S | cm / mol | ∼ 4 x 10-24 | ||
| output power | pout | mW | 3 | ||
| threshold current | lth | mA | 25 | 30 | 50 |
| current tuning coefficient | cT | nm / mA | 0.01 | 0.02 | 0.05 |
| temperature tuning coefficient | cI | nm / K | 0.18 | 0.22 | 0.25 |
| mode hop free tuning range | Δλ | nm | +/- 0.5 |
| electro-optical properties of 4020.0 nm DFB interband cascade laser | symbol | unit | minimum | typical | maximum |
|---|---|---|---|---|---|
| standard wavelength | λ | nm | 4020.0 | ||
| absorption line strength | S | cm / mol | ∼ 1 x 10-21 | ||
| output power | pout | mW | > 3 | ||
| threshold current | lth | mA | 30 | 40 | 60 |
| current tuning coefficient | cT | nm / mA | 0.12 | ||
| temperature tuning coefficient | cI | nm / K | 0.45 | ||
| mode hop free tuning range | Δλ | nm | +/- 0.5 |
| mounting options / technical drawings | wavelength | TEC | cap with window | AR cap with AR window | fiber | heatsink | collimation | |
|---|---|---|---|---|---|---|---|---|
| TO5.6 | 760 nm - 3000 nm | NA | ✔ | NA | NA | NA | NA | |
| TO5 | 760 nm - 3000 nm | ✔ | NA | ✔ | NA | ✔ | ✔ | |
| TO66 | 3000 nm - 6000 nm | ✔ | NA | ✔ | NA | ✔ | ✔ | |
| c-mount | 760 nm - 3000 nm | NA | NA | NA | NA | NA | NA | |
| SM-BTF | 760 nm - 2360 nm | ✔ | NA | NA | single mode | NA | NA | |
| PM-BTF | 1064 nm - 2050 nm | ✔ | NA | NA | polarization maintaining | NA | NA | |
Please find below a number of application samples.
Control of toxic substances: SO2
SO2 is a highly reactive and toxic gas which leads to severe respiratory disorders, hence its emissions have to be controlled.
Please find below a selection of related papers from our literature list.
Let us know if you published a paper with our lasers. We will be happy to include it in our literature list.
#9 DFB Lasers Between 760 nm and 16 µm for Sensing Applications;
W. Zeller, L. Naehle, P. Fuchs, F. Gerschuetz, L. Hildebrandt, J. Koeth, Sensors 2010, 10, pp. 2492-2510.
#67 New Opportunities in Mid-Infrared Emission Control;
P. Geiser, Sensors, 2015, pp. 22724-22736.
#75 Interband cascade laser sources in the mid-infrared for green photonics;
J. Koeth, M. von Edlinger, J. Scheuermann, S. Becker, L. Nähle, M. Fischer, R. Weih, M. Kamp, S. Höfling, Proc. SPIE 9767, Novel In-Plane Semiconductor Lasers XV, 976712, March 10, 2016.
#87 Optical‑feedback cavity‑enhanced absorption spectroscopy with an interband cascade laser: application to SO2 trace analysis;
L. Richard, I. Ventrillard, G. Chau, K. Jaulin, E. Kerstel, D. Romanini, Appl. Phys. B, 2016, 122:247.
#100 Multiheterodyne spectroscopy using interband cascade lasers;
L. A. Sterczewski, J. Westberg, C. L. Patrick, C. S. Kim, M. Kim, C. L. Canedy, W. W. Bewley, C. D. Merritt, I. Vurgaftman, J. R. Meyer and G. Wysocki, Opt. Eng. 57(1), 011014, Jan. 2018.
#101 Single-mode interband cascade laser multiemitter structure for two-wavelength absorption spectroscopy; J. Scheuermann, R. Weih, S. Becker, M. Fischer, J. Koeth, S. Höfling, Opt. Eng. 57(1), 011008, Sept. 2017