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1854 nm & 1877 nm
TOP Wavelength

Discover Our Wavelength

Distributed Feedback Laser

1854 nm & 1877 nm
TOP Wavelength

DFB laser diodes at 1854 nm and 1877 nm are used for water vapour detection.

Please have a look at the key features, specifications and applications.

Specifications
Mountings & Accessories
Applications
Papers & Links
Specifications
parameters
symbol
unit
minimum
typical
maximum
parameters

operating wavelength (at Top, Iop)

symbol

λop

unit

nm

minimum
typical

1854 & 1877

maximum
parameters

optical output power (at λop)

symbol

Pop

unit

mW

minimum
typical

5

maximum
parameters

operating current

symbol

Iop

unit

mA

minimum
typical

100

maximum
parameters

operating voltage

symbol

Vop

unit

V

minimum
typical

2

maximum
parameters

threshold current

symbol

Ith

unit

mA

minimum

8

typical

18

maximum

32

parameters

side mode suppression ratio

symbol

SMSR

unit

dB

minimum
typical

> 35

maximum
parameters

current tuning coefficient

symbol

CI

unit

nm / mA

minimum

0.017

typical

0.025

maximum

0.035

parameters

temperature tuning coefficient

symbol

CT

unit

nm / K

minimum

0.17

typical

0.19

maximum

0.21

parameters

operating chip temperature

symbol

Top

unit

°C

minimum

+20

typical

+25

maximum

+45

parameters

operating case temperature (non-condensing)

symbol

TC

unit

°C

minimum

-20

typical

+25

maximum

+55

parameters

storage temperature (non-condensing)

symbol

TS

unit

°C

minimum

-40

typical

+20

maximum

+80

Specifications
TO56 - the absolute basic
  • availability: 760 nm - 3000 nm
  • TEC: no TEC
  • NTC: no NTC
  • cap: uncoated cap (optional)
  • window: uncoated window (optional)
  • plug&play: collimation required
  • size: small footprint
  • costs: low cost
TO5 - our workhorse
  • availability: 760 nm - 3000 nm
  • TEC: integrated TEC
  • NTC: integrated NTC
  • cap: AR coated cap (optional)
  • window: AR coated window (optional)
  • plug&play: collimation required
  • size: small footprint
  • costs: low cost
c-mount - basic OEM integration
  • availability: 760 nm - 3000 nm
  • TEC: no TEC
  • NTC: no NTC
  • cap: NA
  • window: NA
  • plug&play: collimation required
  • size: low cost
SM-BTF - our fiber-coupled workhorse
  • availability: 760 nm - 2360 nm
  • TEC: integrated TEC
  • NTC: integrated NTC
  • plug&play: fiber-coupled beam
  • size: large footprint
  • costs: higher cost than free space
PM-BTF - high-end fiber coupling
  • availability: 1064 nm - 2050 nm
  • TEC: integrated TEC
  • NTC: integrated NTC
  • plug&play: fiber-coupled beam
  • size: large footprint
  • costs: higher costs than free space
chip on heatspreader - high-end OEM integration
  • availability: 760 nm - 6000 nm
  • TEC: no TEC
  • NTC: integrated NTC
  • cap: NA
  • window: NA
  • plug&play: collimation required
  • size: smallest footprint
  • costs: low cost
Heatsink for TO5 / TO66
  • availability: 760 nm - 6500 nm
  • NTC: integrated (optional)
  • heat distribution: warranted
  • connectors: for laser diode driver & temperature controller
  • posts: M6 thread for optical table
  • cage system: standard
  • collimation: none
Heatsink for TO5 with collimation
  • availability: 760 nm - 1850 nm
  • heat distribution: warranted
  • connectors: for laser diode driver & temperature controller
  • posts: M6 thread for optical table
  • cage system: standard
  • collimation: collimation with up to 40 % power loss
Mountings & Accessories
H2O
Isotopologue ratio measurements: H2O

Water isotopologue measurements are carried out in various research fields like climate and paleoclimate studies, geological surveys, hydrological studies, and clinical research for diagnosis.

[ 167 , 105 ]
CO2 & H2O
Isotope detection by NASA Mars Rover Curiosity: CO2 and H2O

NASA’s flagship Rover Curiosity detects CO2 and H2O isotopes based on their tunable laser spectrometer SAM. The analysis of soil samples is to determine whether Mars is or has been a suitable living environment. We are proud that the instrument uses a 2.78 µm nanoplus laser for this measurement.

[ 115 , 25 ]
H2O
Optimization of internal combustion engines: H2O

The automotive industry designs new engines to increase fuel efficiency and reduce pollutant emission. Exhaust gas recirculation has become a standard technology for emission control. A newly developed laser hygrometer measures water vapour in such engines with microsecond time resolution and in situ. This method helps to rapidly quantify recirculated gas fractions and to eventually optimize combustion.

[ 47 ]
H2O
Monitoring of climate processes: H2O

Ecologists are worried about the melting of permafrost soils in the northern hemisphere. Greenhouse gases like CO2 or CH4 that are stored in the soil might be released in this case. Another, less observed, thread comes from the evaporation and condensation of large water vapor volumes. A laser-based hygrometer for mobile field applications has been developed. It measures water vapour in situ and at low concentrations. An airborn approach for monitoring climate processes is the use of a multi-wavelength H2O-Differential Absorption Lidar. It examines the whole troposphere and lower stratosphere simultaneously.

[ 46 , 21 ]
H2O
Quality control in natural gas pipelines: H2O

Water vapour measurement is critical for gas companies to meet quality specifications and to protect pipelines from corrosion. False positives are very costly. Often the gas cannot be delivered if it is "wet".

H2O
Combustion control in high temperature processes: H2O

Water vapour is often examined in combustion and propulsion processes as it is a primary product of hydrogen and hydrocarbon fuels.

[ 154 , 153 , 121 , 120 , 70 , 65 , 28 , 17 , 16 , 15 ]
Papers & Links
# 4 Laser-Based Analyzers – Shining New Stars
P. Nesdore, Gases & Instrumentation, March/April 2011, pp. 30-33,
# 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, 10, 2010, pp. 2492-2510.,
# 15 Scanned-wavelength-modulation spectroscopy near 2.5 µm for H2O and temperature in a hydrocarbon-fueled scramjet combustor
C. S. Goldenstein, I. A. Schultz, R. M. Spearrin, J. B. Jeffries, R.K. Hanson, Appl. Phys. B,, 116, 3, September 2014, pp 717-727.,
# 16 Diode laser measurements of linestrength and temperature-dependent lineshape parameters of H2O-, CO2-, and N2-perturbed H2O transitions near 2474 and 2482 nm
C.S. Goldenstein, J.B. Jeffries, R.K. Hanson, Journal of Quantitative Spectr. & Radiative Transfer, 130, 2013, pp. 100–111.,
# 17 Wavelength-modulation spectroscopy near 2.5 µm for H2O and temperature in high-pressure and -temperature gases
C.S. Goldenstein, R.M. Spearrin, J.B. Jeffries, R.K. Hanson, Appl. Phys. B, 116, 3, September 2014, pp 705-716.,
# 19 Measurements of Mars Methane at Gale Crater by the SAM Tunable Laser Spectrometer on the Curiosity Rover
C.R. Webster, P.R. Mahaffy, S.K. Atreya, G.J. Flesch, K.A. Farley, 44th Lunar and Planetary Science Conference,, LPI Contribution No. 1719, March 18-22 2013, p. 1366.,
# 21 The airborne multi-wavelength water vapor differential absorption lidar WALES: system design and performance
M. Wirth, A. Fix, P. Mahnke, H. Schwarzer, F. Schrandt, G. Ehret, Appl. Phys.B, 96, 1th July 2009, pp. 201-213,
# 25 Isotope Ratios of H, C, and O in CO2 and H2O of the Martian Atmosphere
C.R. Webster, P.R. Mahaffy, G.J. Flesch, P.B. Niles, J. Jones, L.A. Leshin, S.K. Atreya, J.C. Stern, L.E. Christensen, T. Owen, H. Franz, R.O. Pepin, A. Steele, Science, 341, 6143, 2013, pp. 260-263.,
# 28 In situ combustion measurements of H2O and temperature near 2.5 µm using tunable diode laser absorption
A. Farooq, J.B Jeffries, R.K Hanson, Meas. Sci. Technol., 19, 2008, 075604, pp. 11.,
# 30 Kalman filtering real-time measurements of H2O isotopologue ratios by laser absorption spectroscopy at 2.73 µm
T. Wu, W. Chen, E. Kerstel, E. Fertein, X. Gao, J. Koeth, Karl Roessner, D. Brueckner , Opt. Lett., 35, 5, 2010, pp. 634.636.,
# 34 High power pulsed 976 nm DFB laser diodes
W. Zeller, M. Kamp, J. Koeth, L. Worschech, Photonic Microdevices/Microstructures for Sensing, II, 76820T, 2010,
# 51 Noninvasive monitoring of gas in the lungs and intestines of newborn infants using diode lasers: feasibility study
P. Lundin, E.K. Svanberg, L. Cocola, M.L. Xu, G. Somesfalean, S. Andersson-Engels, J. Jahr, V. Fellman, K. Svanberg, S. Svanberg , Journal of Biomedical Optics, 18 (12), December 2013, 127005,

Optical properties

nanoplus distributed feedback lasers show outstanding spectral, tuning and electrical properties.

Spectrum 1877 nm DFB

Typical spectrum of a nanoplus 1877 nm distributed feedback laser diode

Tuning 1877 nm DFB

Typical mode hop free tuning of a nanoplus 1877 nm distributed feedback laser diode

PI Curve 1877 nm DFB

Typical power, current and voltage characteristics of a nanoplus 1877 nm distributed feedback laser diode

Learn more

Product Brief

More information

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.

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