Top Wavelength: 3345 nm & 3375 nm DFB Laser
DFB interband cascade lasers at 3345 nm & 3375 nm nm are used for ethane 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 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 3345 nm & 3375 nm
Mountings & Accessories
Papers & Links
The following table summarizes the typical DFB laser specifications at 3345 nm & 3375 nm.
|operating wavelength (at Top, Iop)||λop||nm||3345 / 3375|
|optical output power (at λop)||Pop||mW||15|
|side mode suppression ratio||SMSR||dB||> 35|
|current tuning coefficient||CI||nm / mA||0.10|
|temperature tuning coefficient||CT||nm / K||0.35|
|operating chip temperature||Top||°C||+15||+20||+40|
|operating case temperature*||TC||°C||-20||+25||+55|
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
Please find below a number of application samples.
Emission control of greenhouse gases: C2H6
Ethane is an important greenhouse gas that has a critical impact on climate change. Emissions are related to fossil fuel and biofuel consumption, biomass combustion and natural gas losses. Trace gas detection of ethane is an important tool to monitor greenhouse gases. [10, 120, 129]
Emission control by methane source identification: C2H6
Ethane is a by-product of methane emissions. The ethane ratio varies between methane emissions from thermogenic and biogenic sources. This allows differentiating oil and gas reserves from those of livestock, landfills, wetlands or stagnant water. Studies are executed on behalf of the US Environmental Protection Agency to quantify methane emissions caused byincreased natural gas exploration and production in the US. A newly developed ethane spectrometer delivers 1 second ethane measurements with sub-ppb precision in an ethane-methane mixture. 
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.
#10 Continuous wave, distributed feedback diode laser based sensor for trace-gas detection of ethane;
K. Krzempek, R. Lewicki, L. Naehle, M. Fischer, J. Koeth, S. Belahsene, Y. Rouillard, L. Worschech, F.K. Tittel, Appl. Phys. B 106, 2, 2012, pp 251-255.
#53 CW DFB RT diode laser-based sensor for trace-gas detection of ethane using a novel compact multipass gas absorption cell;
K. Krzempek, M. Jahjah, R. Lewicki, P. Stefanski, S. So, D. Thomazy, F.K. Tittel, Appl. Phys. B, 112, 4, Sept. 2013, pp. 461-465.
#61 Demonstration of an Ethane Spectrometer for Methane Source Identification;
T.I. Yacovitch, S.C. Herndon, J.R. Roscioli, C. Floerchinger, R.M. McGovern, M. Agnese, G. Petron, J. Kofler, C. Sweeney, A. Karion, S.A. Conley, E.A. Kort, L. Naehle, M. Fischer, L. Hildebrandt,.J. Koeth, J.B. McManus, D.D. Nelson, M.S. Zahniser, C.E. Kolb, Environ. Sci. Technol., 48, 2014, 8028-8034.
#63 Breath Analysis Using Laser Spectroscopic Techniques: Breath Biomarkers, Spectral Fingerprints, and Detection Limits;
C. Wang and P. Sahay, Sensors 2009, 9, 8230-8262.
#77 Compact TDLAS based sensor design using interband cascade lasers for mid-IR trace gas sensing;
L. Dong, F. K. Tittel, C. Li, N. P. Sanchez, H. Wu, C. Zheng, Y. Yu, A. Sampaolo, R. J. Griffin; Optics Express Vol. 24, Issue 6, 2016, pp. A528-A535.
#82 Ppb-level mid-infrared ethane detection based on three measurement schemes using a 3.34 μm continuous-wave interband cascade laser;
C. Li, C. Zheng, L. Dong, W. Ye, F. K. Tittel, Y. Wang, Appl. Phys. B, July 2016, 122:185.
# 107 Recent progress in laser‑based trace gas instruments: performance and noise analysis;
J. B. McManus, M. S. Zahniser, D. D. Nelson et. al., Appl. Phys. B, 2015, 119: 203.
#120 Interband cascade laser based quartz-enhanced photoacoustic sensor for multiple hydrocarbons detection;
A. Sampaolo, S. Csutak, P. Patimisco, M. Giglio, G. Menduni, V. Passaro, F. K. Tittel, M. Deffenbaugh, V. Spagnolo, Proc. SPIE 10540, Quantum Sensing and Nano Electronics and Photonics XV, 105400C, Jan. 26th, 2018.
#123 A streamlined approach to hybrid-chemistry modeling for a low cetane-number alternative jet fuel;
N. H. Pinkowski, Y. Wang , S. J. Cassady , D. F. Davidson , R. K. Hanson, Combustion and Flame, Vol. 208, Oct. 2019, pp. 15-26.
#124 Multi-wavelength speciation of high-temperature 1-butene pyrolysis;
N. H. Pinkowski, S. J. Cassady, D. F. Davidson, R. K. Hanson, Fuel, Vol. 244, 15th May 2019, pp. 269-281.
# 125 Tomographic laser absorption imaging ofcombustion species and temperature in the mid-wave infrared;
C. Wei, D. I. Pineda, C. S. Goldenstein, R. M. Spearrin, Opt. Exp., Vol. 26, Iss. 16, 2018, pp. 20944 - 20951.
#126 Time-resolved laser absorption imaging of ethane at 2 kHz in unsteady partially premixed flames;
K. K. Schwarm, C. Wei, D. I. Pineda, R. M. Spearrin, Appl. Opt., Vol. 58, Iss. 21, Jul. 2019, pp. 5656 - 5662.
#129 Quartz-enhanced photoacoustic spectroscopy for hydrocarbon trace gas detection and petroleum exploration;
A. Sampaoloa, G. Mendunib,P. Patimiscoa, M. Giglioa, V. M.N. Passaroc, L. Donga, H. Wua, F. K. Tittel, V. Spagnoloa, Fuel, Vol. 277, 2020.