Top Wavelength: 2460.0 nm DFB Laser

DFB laser diodes at 2460.0 nm are used for sulfur dioxide 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 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 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 2460.0 nm


Mountings & Accessories


Papers & Links

The following table summarizes the typical DFB laser specifications at 2460.0 nm.

parameters (T = 25 °C)symbolunitminimumtypicalmaximum
wavelength precisionδnm0.1
optical output powerPoutmW3
forward currentIfmA100
threshold currentlthmA253050
current tuning coefficientCInm / mA0.010.020.5
temperature tuning coefficientCTnm / K0.180.220.25
typical maximum operating voltageVopV2
side mode suppression ratioSMSRdB> 32
slow axis (FWHM)degrees172025
fast axis (FWHM)degrees354045
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 2460 nm DFB laser diode
Figure 1: Spectrum of nanoplus 2460 nm DFB laser diode
Figure 2: Mode hop free tuning of nanoplus 2460 nm DFB laser diode
Figure 2: Mode hop free tuning of nanoplus 2460 nm DFB laser diode
Figure 3: Typical power, voltage and current characteristics of nanoplus 2460 nm DFB laser diode
Figure 3: Typical power, voltage and current characteristics of nanoplus 2460 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
without TEC
and thermistor


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.


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.

Emission control of flue gases: SO2
SO2 causes acid rain when it reacts with nitrogen oxide. It is generated during fuel combustion at power plants and other industrial facilities. For this reason SO2 emissions are restricted and need to be monitored. [67]

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.

#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.

#121 Single-ended mid-infrared laser-absorption sensor for time-resolved measurements of water concentration and temperature within the annulus of a rotating detonation engine;
W. Y. Peng, S. J. Cassady, C. L. Strand, C. S. Goldenstein, R. Mitchell Spearrin, C. M. Brophy, J. B. Jeffries, R. K. Hanson, Proc. of the Comb. Inst. Vol. 37, Iss. 2, 2019, pp. 1435–1443.

#122 A comparative laser absorption and gas chromatography study of low-temperature n-heptane oxidation intermediates;
A. M. Ferris, J. W. Streicher, A. J. Susa, D. F. Davidson, R. K. Hanson, Proc. of the Comb. Inst. Vol. 37, Iss. 1, 2019, pp. 249-257.

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