Hydrogen Sulfide Detection (H2S)
Application areas of laser-based hydrogen sulfide detection
nanoplus lasers for hydrogen detection are used for various applications including:
- Process Optimization: Corrosion surveillance
- Safety: Emission control
Tunable diode laser spectroscopy allows measuring H2S 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 hydrogen sulfide detection
nanoplus offers various wavelengths to target the vibrational-rotational bands of hydrogen sulfide. Literature recommends the following wavelengths for hydrogen sulfide detection:
Select your wavelength for hydrogen sulfide detection
Above wavelengths as well as further customized wavelengths for hydrogen sulfide 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 hydrogen sulfide detection
Specifications & Mountings
Applications
Papers & Links
The following tables analyse the typical specifications of the standard wavelengths for H2S detection.
| electro-optical properties of 1590.0 nm DFB laser diode | symbol | unit | minimum | typical | maximum |
|---|---|---|---|---|---|
| standard wavelength | λ | nm | 1590.0 | ||
| absorption line strength | S | cm / mol | ∼ 1 x 10-22 | ||
| output power | pout | mW | 5 | 7 | 10 |
| threshold current | lth | mA | 10 | 25 | 30 |
| current tuning coefficient | cT | nm / mA | 0.008 | 0.015 | 0.02 |
| temperature tuning coefficient | cI | nm / K | 0.07 | 0.1 | 0.14 |
| mode hop free tuning range | Δλ | nm | +/- 0.5 | +/- 0.7 | +/- 1 |
| electro-optical properties of 2640.0 nm DFB laser diode | symbol | unit | minimum | typical | maximum |
|---|---|---|---|---|---|
| standard wavelength | λ | nm | 2640.0 | ||
| absorption line strength | S | cm / mol | ∼ 3 x 10-21 | ||
| output power | pout | mW | 2 | ||
| threshold current | lth | mA | 30 | 50 | 80 |
| current tuning coefficient | cT | nm / mA | 0.01 | 0.02 | 0.05 |
| temperature tuning coefficient | cI | nm / K | 0.15 | 0.2 | 0.28 |
| 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 hazardous gases: H2S
H2S occurs as a corrosive, toxic and explosive side product in the petrochemical industry. Continuous monitoring of this hazardous compound is critical to avoid corrosion of natural gas pipelines and ensure workers safety. Real-time analysis is essential to guarantee that burning fuels are H2S clean in order to prevent acid rains. [3, 69, 76]
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.
#3 Gas monitoring in the process industry using diode laser spectroscopy;
I. Linnerud, P.Kaspersen, T. Jaeger, Appl. Phys. B 67, 1998, pp. 297-305.
#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.
#69 A quartz-enhanced photoacoustic sensor for H2S trace-gas detection at 2.6µm;
S. Viciani, M. Siciliani de Cumis, S. Borri, P. Patimisco, A. Sampaolo, G. Scamarcio, P. De Natale, F. D'Amato, V. Spagnolo, App. Phys. B, 2015, 119, pp. 21-27.
#76 Diode laser-based trace detection of hydrogen-sulfide at 2646.3 nm and hydrocarbon spectral interference effects;
R. Sharma, C. Mitra, V. Tilak, Opt. Eng. 55(3), 037106, Mar 14, 2016.
#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