Top Wavelength: 3560.0 nm DFB Laser
DFB interband cascade lasers at 3560.0 nm are used for formaldehyde detection. Please have a look at the key features, specifications and applications.
Key features of nanoplus DFB interband cascade lasers
- continuous wave
- room temperature
- low power consumption
- custom wavelengths
Why choose nanoplus DFB interband cascade lasers
- 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 3560.0 nm
Mountings & Accessories
Papers & Links
The following table summarizes the typical DFB laser specifications at 3560.0 nm.
|optical output power||Pout||mW||> 1|
|current tuning coefficient||CI||nm / mA||0.2|
|temperature tuning coefficient||CT||nm / K||0.3|
|typical maximum operating voltage||Vop||V||4 - 6|
|side mode suppression ratio||SMSR||dB||> 35|
|slow axis (FWHM)||degrees||35|
|fast axis (FWHM)||degrees||55|
|operational temperature at case||TC||°C||+20|
nanoplus DFB lasers show outstanding spectral, tuning and electrical properties. They are demonstrated in figures 1 - 3. Click on the graphics to enlarge.
Free space mounting
nanoplus developed a specific free space package for interband cascade lasers. The TO66 header disposes of an extra large thermo-electric cooler. It is hermetically sealed with a black cap and anti reflection coated window. Please click on the mounting for detailed specifications and dimensions.
The nanoplus TO66 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 number of application samples.
Workplace exposure monitoring: CH2O
Formaldehyde has been used in consumer and industrial products since the beginning of the 19th century. Currently the annual formaldehyde production accounts for 21 million tons. About 50 % are processed as adhesives in pressed wood panels. In 2004 formaldehyde has been classified carcinogenic by the International Agency for Research on Cancer. Since then formaldehyde concentrations have been strictly controlled in the production process as well as in the finished product. Laser-based measurement systems are required to detect the maximum levels of 0.01 ppb (USA) and 2 ppb (EU). [9, 22, 78, 109, 115]
Chemical sensing using surface plasmon polariton:
A 3.6 µm ICL is used to enhance the reading of the surface plasmon polariton effect. 
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.
#2 Advanced Gas Sensing Applications Above 3 µm with DFB Laser Diodes;
L. Naehle, L. Hildebrandt, M. Fischer, J. Koeth, Gases & Instrumentation, March/April 2012, pp. 25-28.
#5 DFB lasers exceeding 3 µm for industrial applications;
L. Naehle, L. Hildebrandt, Laser+Photonics 2012, pp. 78-80.
#7 DFB laser diodes expand hydrocarbon sensing beyond 3 µm;
L. Hildebrandt, L. Naehle, Laser Focus World, January 2012, pp. 87-90.
#8 ICLs open opportuneties for mid-IR seinsing;
L. Naehle, L. Hildebrandt, M. Kamp, S. Hoefling, Laser Focus World, May 2013, pp. 70-73.
#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.
#22 Sensing of formaldehyde using a distributed feedback interband cascade laser emitting around 3493 nm;
S. Lundqvist, P. Kluczynski, R. Weih, M. von Edlinger, L. Naehle, M. Fischer, A. Bauer, S. Hoefling, J. Koeth, Appl. Opt., 51, 25, 2012, pp. 6009-6013.
#36 Single mode interband cascade lasers based on lateral metal gratings;
R. Weih, L. Naehle, Sven Hoefling, J. Koeth, M. Kamp, Appl. Phys. Lett., 105, 7, 2014, pp. 071111.
#63 Breath Analysis Using Laser Spectroscopic Techniques: Breath Biomarkers, Spectral Fingerprints, and Detection Limits;
C. Wang and P. Sahay, Sensors 2009, 9, 8230-8262.
#64 Interband Cascade Lasers - Topical Review;
I. Vurgaftman, R. Weih, M. Kamp, C.L. Canedy, C.S. Kim, M. Kim, W.W. Bewley, C.D. Merritt, J. Abell, S. Hoefling, Phys. D: Appl. Phys. 48, 2015, pp. 123001-12017.
#78 Ppb-level formaldehyde detection using a CW room-temperature interband cascade laser and a miniature dense pattern multipass gas cell;
L. Dong,Y. Yu,.C. Li, S. So, F. Tittel, Optics Express Vol. 23, Issue 15, 2015, pp. 19821-19830.
# 83 Mid-infrared surface plasmon polariton chemical sensing on fiber-coupled ITO coated glass;
J. Martínez, A. Ródenas, M. Aguiló, T. Fernandez, J. Solis, F. Díaz, Optics Letters, Vol. 41, No. 11, June 1 2016,
pp. 2493 - 2496.
#115 Interband cascade laser absorption sensor for real-time monitoring of formaldehyde filtration by a nanofiber membrane;
C. Yao, Z. Wang, Q. Wang, Y. Bian, C. Chen, L. Zhang, W. Ren, App. Optics, Vol. 57, No. 27, 20 September 2018, 8005.