DFB-2004-3
DFB-2004-3 is DFB laser diodes manufactured by Roithner.
Description
2.0 μm DFB laser diodes (in the following a 2004nm device is exemplary presented) show unique device performance to meet the requirements of our customers. Their high side mode suppression ratio (SMSR) and high spectral purity make them perfectly suited for applications like e.g. CO2 spectroscopy. Mode-hop free DFB emission with a high side mode suppression ratio (SMSR) around 35d B is guaranteed for the device in the entire specified temperature and current range of operation.
Spectrum
Fig. 1:Spectrum of a 2004nm DFB Laser diode.
Applications
- trace gas sensing of CO2
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Absolute Maximum Ratings
Parameter LD forward current LD reverse voltage Operating temperature Storage temperature
Symbol If Ur Top
Tstore
Unit m A V °C °C
Electrical/Optical Characteristics
Parameter Wavelength
Symbol Unit λ nm
Side mode supression d B
Optical output power Forward current Threshold current Beam divergence parallel
Popt m W If m A Ith m A deg.
Beam divergence perpendicular deg.
Slope efficiency e m W/m A
Current tuning rate Temperature tuning rate
CI nm/m A CT nm/K min 2003
40 20 25 45 0.08 0.01 0.18
Rating 100 1.5
-20 … 50 -20 … 85 typical 2004
35 3 50 25 30 50 0.12 0.02 0.2 max 2005
100 50 35 60 0.15 0.03 0.22
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Packages
Different packaging options are available for those LD. Shown here are standard TO headers (e.g. TO5.6, TO9, TO8) with and without Peltier cooler. Mounting on customer specific submounts and bare chips are also available upon request. plain chip
TO 5.6 mm
TO 9 mm
TO 5 with integrated TEC and thermistor
TO 8 with integrated TEC and thermistor fiber coupled fiber coupled with TEC and thermistor
C-mount
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