TDLAS Methane sensor application 1650-1653nm laser (SN-LB-04)
1. Description:
l 1650.9nm or 1653.7nm typical emission wavelength
l Data rate operation from DC to 2.5Gbps
l Compliant with ROSH
The laser diodes cover customer selection of wavelengths from 1649nm to 1654nm which are fabricated in a hermetically sealed 6-pin minibox package. The laser diodes contains thermoelectric cooler(TEC), thermistor, monitor photodiode, double optical isolator to secure high quality laser performance. The double optical isolator can effectively prevent laser oscillation caused by return light of strong light reflecting surface.
The Laser Diodes Wavelength:1653.7±0.5nm or 1650.9±0.5nm,Output power ≥35mW at 100mA,Collimating lens output.
2. Absolute Maximum Rating
Parameter |
Symbol |
Condition |
Min |
Typ |
Max |
Storage temperature |
TS |
- |
-40℃ |
- |
100℃ |
Storage Humidity |
RH |
|
- |
- |
85℃ |
Operation temperature |
TOP |
- |
-20℃ |
- |
70℃ |
Forward Current |
IF |
CW |
- |
- |
400mA |
Laser Reverse Voltage |
VLR |
- |
- |
- |
2V |
PD Forward Current |
IFPD |
- |
- |
1.0mA |
3mA |
PD Reverse Voltage |
VRPD |
- |
- |
5V |
10V |
TEC Current |
ITEC |
- |
- |
0.8A |
1.5A |
TEC Voltage |
VTEC |
- |
- |
3.3V |
5V |
3. Optical Characteristics(at 25℃ laser temperature)
Parameter
Symbol
Condition
Min
Typ
Max
Center Wavelength
λc
TL=15-35℃
-40℃
-
100℃
Optical Output Power
Po
IF=150mA CW
25mW
35mW
-
Threshold Current
Ith
T=25 ℃
-
25mA
35mA
Optical Isolation
LW
Full width,half maximum(FWHM)
-
3Mhz
-
Bandwidth(@-3dB)
BW
-
-
2.5Ghz
-
Side-mode-Suppression Ratio
SMSR
CW
35dB
40dB
-
Wavelength Drift(EOL)
△λ
25-year lifetime
-
1.0mA
±0.1nm
Wavelength Temperature coefficient
△λ/△T
TEC temperature at 15℃ to 35℃
-
0.1nm/℃
-
Wavelength Current coefficient
△λ/△I
-
-
0.01nm/mA
-
Slope Efficiency
η
CW
0.05mW/mA
0.08mW/mA
0.2mW/mA
Operating current
Iop
CW
-
150mA
200mA
TEC set temperature
Ta
-
15℃
-
35℃
Laser Forward Voltage
VF
CW
-
1.16V
1.5V
Thermistor Current
Itc
-
10uA
-
100uA
Thermistor Resistance
Tth
TL=25℃
9.5kΩ
10kΩ
10.5kΩ
Thermistor temperature
TM
-
-
-
100℃
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