DFB-2004-3 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 35dB 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 10.08.2010 dfb_2004_3.doc 1 of 3 Absolute Maximum Ratings Parameter LD forward current LD reverse voltage Operating temperature Storage temperature Symbol If Ur Top Tstore Unit mA V °C °C Rating 100 1.5 -20 … 50 -20 … 85 Electrical/Optical Characteristics Parameter Wavelength Side mode supression Optical output power Forward current Threshold current Beam divergence parallel Beam divergence perpendicular Slope efficiency Current tuning rate Temperature tuning rate 10.08.2010 Symbol λ Popt If Ith e CI CT Unit nm dB mW mA mA deg. deg. mW/mA nm/mA nm/K dfb_2004_3.doc min 2003 32 40 20 25 45 0.08 0.01 0.18 typical 2004 35 3 50 25 30 50 0.12 0.02 0.2 max 2005 40 100 50 35 60 0.15 0.03 0.22 2 of 3 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 10.08.2010 dfb_2004_3.doc 3 of 3