Top Wavelength: 2330 nm & 2334 nm DFB Laser
DFB laser diodes at 2330 nm and 2334 nm are used for carbon monoxide detection.
Please have a look at the key features, specifications and applications.
Key features of nanoplus distributed feedback laser diodes
- continuous wave
- room temperature
- custom wavelengths
Why choose nanoplus distributed feedback laser diodes
- stable longitudinal and transversal single mode emission
- precise selection of target wavelength
- narrow laser linewidth
- mode-hop-free wavelength tunability
- fast wavelength tuning
- typically > 5 mW output power
- small size
- easy usability
- high efficiency
- long-term stability
For more than 20 years nanoplus has been the technology leader for lasers in gas sensing. We produce lasers at large scale at our own fabrication sites in Gerbrunn and Meiningen. nanoplus cooperates with the leading system integrators in the TDLAS based analyzer industry. More than 30,000 installations worldwide prove the reliability of nanoplus lasers.
Quick description of nanoplus distributed feedback laser technology
nanoplus uses a unique and patented technology for DFB laser manufacturing. We apply a lateral metal grating along the ridge waveguide, which is independent of the material system. Read more about our patented distributed feedback technology.
Related information for nanoplus DFB standard laser diodes at 2330 nm & 2334 nm
Mountings & Accessories
Papers & Links
The following table summarizes the typical DFB laser specifications at 2330 nm & 2334 nm.
|parameters (T = 25 °C)||symbol||unit||minimum||typical||maximum|
|operating wavelength (at Top, Iop)||λop||nm||2330 / 2334|
|optical output power (at λop)||Pop||mW||6|
|side mode suppression ratio||SMSR||dB||> 35|
|current tuning coefficient||CI||nm / mA||0.022||0.04||0.07|
|temperature tuning coefficient||CT||nm / K||0.19||0.20||0.23|
|operating chip temperature||Top||°C||+20||+30||+45|
|operating case temperature*||TC||°C||-20||+25||+55|
nanoplus distributed feedback lasers show outstanding spectral, tuning and electrical properties. They are demonstrated in figures 1 - 3. Click on the graphics to enlarge.
nanoplus offers a variety of free space and fiber coupled mountings. Configure your laser according to your needs.
Free space mountings
Select a TO header with or without TEC. The TO headers are hermetically sealed with cap and window. Ask for customization without cap or without window. c-mount is available upon request. Please click on the mounting for detailed specifications and dimensions.
Fiber coupled mounting
The nanoplus TO5 heatsink facilitates your laser set up by:
- improved heat distribution
- connectors for laser diode driver
- connectors for temperature controller
- M6 thread for optical posts
- easy use with standard cage systems
Please find below a number of application samples.
Combustion control in high temperature processes: CO
CO is a major element in high temperature processes. Optimizing CO concentration in flue gas increases combustion efficiency. Simultaneously, it reduces greenhouse gas emissions. CO detection at long wavelengths like 2.8 µm and 4.3 µm uses stronger vibrational absorption features than the shorter wavelength ranges. This effect increases the sensitivity of the detector and allows using measurement set ups with short path lengths. [3, 12, 35, 48, 111, 125]
Combustion control in high temperature processes: O2 and CO
Oxygen control enhances process and cost efficiency of incinerators. Oxidation requires excess air. But too much air cools down the combustion and increases the amount of CO in the flue gas. Real-time and in situ monitoring helps to optimize the oxygen content in combustion processes. 
Early fire detection: CO
Early fire detection technologies rely on highly sensitive detection of carbon monoxide. Coal-fired power plants, steel mills or biomass deposits use these smoke detectors to increase process and workers safety.
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.
#32 Single-frequency Sb-based distributed-feedback lasers emitting at 2.3 µm above room temperature for application in tunable diode laser absorption spectroscopy;
A. Salhi, D. Barat, D. Romanini, Y. Rouillard, A. Ouvrard, R. Werner, J. Seufert, J. Koeth, A. Vicet, A. Garnache, Appl. Opt., 45, 20., pp. 4957-4965.
#35 TDLAS-based sensors for in situ measurement of syngas composition in a pressurized, oxygen-blown, entrained flow coal gasifier;
R. Sur, K. Sun, J.B. Jeffries, R.K. Hanson, R.J. Pummill, T. Waind, D.R. Wagner, K.J. Whitty, Appl. Phys. B, 116, 1, 2014, pp. 33-42.
#43 Chemical analysis of surgical smoke by infrared laser spectroscopy;
Michele Gianella, Markus W. Sigrist, Appl. Phys. B, 109, 3, Nov. 2012, pp. 485-496.
#48 Absolute, spatially resolved, in situ CO profiles in atmospheric laminar counter-flow diffusion flames using 2.3 µm TDLAS;
S. Wagner, M. Klein, T. Kathrotia, U. Riedel, T. Kissel, A. Dreizler, V. Ebert, Appl. Phys. B, 109, 3, Nov. 2012, pp. 533-540.
#50 Mid-IR difference frequency laser-based sensors for ambient CH4, CO, and N2O monitoring;
J. J. Scherer, J. B. Paul, H. J. Jost, Marc L. Fischer, Appl. Phys. B, 109, 3, Nov. 2012, pp. 271-277.
#63 Breath Analysis Using Laser Spectroscopic Techniques: Breath Biomarkers, Spectral Fingerprints, and Detection Limits;
C. Wang and P. Sahay, Sensors 2009, 9, 8230-8262.
#111 Optical fiber tip‑based quartz‑enhanced photoacoustic sensor for trace gas detection;
Z. Li, Z. Wang, C. Wang, W. Ren, Appl. Phys. B, 2016, 122:147.