Distributed Feedback Lasers: 1650 nm - 1850 nm

nanoplus offers DFB laser diodes at any wavelength between 1650 nm and 1850 nm.

Key features of nanoplus distributed feedback laser diodes

  • monomode
  • continuous wave
  • room temperature
  • tunable
  • 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 laser diodes between 1650 nm and 1850 nm

Specifications

Mountings & Accessories

Applications

Papers & Links

The following table summarizes the typical DFB laser specifications in the 1650 nm to 1850 nm range:

parameters (T = 25 °C)symbolunitminimumtypicalmaximum
operating wavelength (at Top, Iop)λopnm0.1 nm
optical output power (at λop) PopmW5
operating currentIopmA70
operating voltageVopV2
threshold currentIthmA103565
side mode suppression ratioSMSRdB> 35
current tuning coefficientCInm / mA0.0080.020.03
temperature tuning coefficientCTnm / K0.070.100.14
operating chip temperatureTop°C+20+25+50
operating case temperature*TC°C-20+25+50
storage temperature*TS°C-40+20+80

* non-condensing

We offer enhanced specifications for distributed feedback lasers at 1651 nm and 1654 nm for methane detection as well as at 1742.0 nm for hydrogen chloride detection. Please check our Top Wavelengths section for more information.

nanoplus distributed feedback 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 a nanoplus 1742 nm DFB laser diode
Figure 1: Spectrum of a nanoplus 1742 nm DFB laser diode
Figure 2: Mode hop free tuning of a nanoplus 1742.0 nm DFB laser diode
Figure 2: Mode hop free tuning of a nanoplus 1742.0 nm DFB laser diode
Figure 3: Typical power, current and voltage characteristics of a nanoplus 1742 nm DFB laser diode
Figure 3: Typical power, current and voltage characteristics of a nanoplus 1742 nm DFB laser diode

If you are uncertain whether you require a distributed feedback laser, compare the specifications with our Fabry-Pérot lasers or contact us.

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.

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 NTC
c-mount

Fiber coupled mountings

Choose between SM and PM fiber coupling. Please click on the mounting for detailed specifications and dimensions. The SM-BTF is available for lasers between 760 nm and 2360 nm, the PM-BTF option is offered for lasers between 1064 nm and 2050 nm.

butterfly package with single mode fiber, TEC and NTC,
FC / APC connector
butterfly package with single mode fiber
butterfly package with polarization maintaining fiber, TEC and NTC,
FC / APC connector
butterfly package with polarization maintaining fiber

OEM mounting

For our OEM customers we offer a very small footprint package that is easy to integrate.

chip on heatspreader with NTC, without TEC

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.

 

Hydrogen chloride, methane, ethane and nitrogen oxide show absorption features in the wavelength window between 1650 nm and 1850 nm.

For detailed absorption data, please refer to HITRAN database and to our Applications by Gas section.

Figure 4: Absorption features in 1650 nm to 1850 nm range
Figure 4: Absorption features in 1650 nm to 1850 nm range

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.

#33 DFB laser diodes in the wavelength range from 760 nm to 2.5 µm;
J. Seufert, M. Fischer, M. Legge, J. Koeth, R. Werner, M. Kamp, A. Forchel, Spectroch. Acta Part A 60, 2004, pp. 3243-3247.

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