Top Wavelength: 2670.0 nm DFB Laser

DFB laser diodes at 2670.0 nm are used for carbon monoxide detection. Please have a look at the key features, specifications and applications.

Key features of nanoplus DFB laser diodes

  • monomode
  • continuous wave
  • room temperature
  • tunable
  • custom wavelengths

Why choose nanoplus DFB laser diodes

  • stable longitudinal and transversal single mode emission
  • precise selection of target wavelength
  • narrow laser line width
  • 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 15 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 20,000 installations worldwide prove the reliability of nanoplus lasers.

Quick description of nanoplus DFB 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 2670.0 nm

Specifications

Mountings & Accessories

Applications

Papers & Links

The following table summarizes the typical DFB laser specifications at 2670.0 nm.

parameters (T = 25 °C)symbolunitminimumtypicalmaximum
wavelength precisionδnm0.1
optical output powerPoutmW2
forward currentIfmA100
threshold currentlthmA305080
current tuning coefficientCInm / mA0.010.020.05
temperature tuning coefficientCTnm / K0.150.20.28
typical maximum operating voltageVopV2
side mode suppression ratioSMSRdB> 35
slow axis (FWHM)degrees203040
fast axis (FWHM)degrees405060
emitting areaW x Hµm x µm3.0 x 1.04.5 x 1.55.0 x 2.0
storage temperatureTS°C-40+20+80
operational temperature at caseTC°C-20+25+50

nanoplus DFB lasers show outstanding spectral, tuning and electrical properties. They are demonstrated in figures 1 - 3. Click on the graphics to enlarge.

Figure 1: Spectrum of nanoplus 2670 nm DFB laser diode
Figure 1: Spectrum of nanoplus 2670 nm DFB laser diode
Figure 2: Mode hop free tuning of nanoplus 2670 nm DFB laser diode
Figure 2: Mode hop free tuning of nanoplus 2670 nm DFB laser diode
Figure 3: Typical power, voltage and current characteristics of nanoplus 2670 nm DFB laser diode
Figure 3: Typical power, voltage and current characteristics of nanoplus 2670 nm DFB laser diode

If you are uncertain whether you require a DFB laser, compare the specifications with our Fabry Perot Lasers or contact us.

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.

TO5 header
with TEC
and thermistor,
black cap and
AR coated window
TO5 header
TO56 header
without TEC
and thermistor,
cap and window
TO56 header
c-mount
without TEC
and thermistor
c-mount

Accessories

TO5 heatsink
TO5 heatsink

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
TO5 heatsink with collimation
TO5 heatsink with collimation

The nanoplus TO5 heatsink is available with collimation. The optical set up guarantees a collimated elliptical beam shape.

 

 

nanoplus compact collimation module with heatsink and lens
nanoplus compact collimation module with heatsink and lens

The nanoplus compact collimation module offers:

  • collimated beam
  • specified beam direction
  • identical reference and heat sink plane
  • TEC + thermistor
  • hermetically sealed laser housing

Please find below a number of application samples.

Combustion control in high temperature processes:
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]

Combustion control in high temperature processes:
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. [3]

Early fire detection:
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.

Monitoring of breath gas:
The relatively new research field of breath analysis defines CO concentration in exhaled breath as a biomarker for e. g. respiratory infections and asthma. [63].

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.

#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.

#73 Time-multiplexed open-path TDLAS spectrometer for dynamic, sampling-free, Interstitial H218O and H216O vapor detection in ice clouds;
B. Kuehnreich, S. Wagner, J.C. Habig, O. Moehler, H. Saathoff, V. Ebert, App. Phys. B, 2015, 119, pp. 177-187.

#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.

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