Top Wavelength: 1278.8 nm DFB Laser
DFB laser diodes at 1278.8 nm are used for hydrogen fluoride detection. Please have a look at the key features, specifications and applications.
Key features of nanoplus DFB laser diodes
- continuous wave
- room temperature
- 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 1278.0 nm
Mountings & Accessories
Papers & Links
The following table summarizes the typical DFB laser specifications at 1278.8 nm.
|parameters (T = 25 °C)||symbol||unit||minimum||typical||maximum|
|optical output power||Pout||mW||20|
|current tuning coefficient||CI||nm / mA||0.007||0.01||0.02|
|temperature tuning coefficient||CT||nm / K||0.07||0.09||0.1|
|typical maximum operating voltage||Vop||V||2|
|side mode suppression ratio||SMSR||dB||> 35|
|slow axis (FWHM)||degrees||12||15||20|
|fast axis (FWHM)||degrees||45||50||55|
|emitting area||W x H||µm x µm||1.8 x 1.8||2.0 x 2.0||2.5 x 2.3|
|operational temperature at case||TC||°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.
Figures 1 - 3
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 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.
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
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 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.
#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.