The LD-PD’s Distributed Feedback Lasers (DFB) are specifically designed for high-precision gas detection using tunable diode laser absorption spectroscopy (TDLAS). Our devices operate reliably in more than 40,000 installations worldwide. For more than 10 years LD-PDshas set the standard for DFB laser technology and we manufacturer routinely providing DFB lasers at any wavelength.
Name | Model | Description | Parameter | Price |
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● Mono mode,Continuous Wave
● Room Temperature operation
● Mode hope free tuning
Electrical/Optical Characteristics (Tsub=25°C, CW bias unless stated otherwise)
parameters | symbol | unit | minimum | typical | maximum |
operating wavelength (at Top, Iop) | λop | nm | 3390nm | ||
optical output power (at λop) | Pop | mW | 10 | ||
operating current | Iop | mA | 120 | ||
operating voltage | Vop | V | 5 | ||
threshold current | Ith | mA | 15 | 30 | 50 |
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 | +10 | +20 | +50 |
operating case temperature* | TC | °C | -20 | +25 | +50 |
storage temperature* | TS | °C | -30 | +20 | +70 |
TEC parameters
Parameter | Symbol | Value | Unit |
Max. temp. diff. (@ Q=0 W) | ∆Tmax | 65 | K |
Max. current | max | 1.4 | A |
Max. voltage | max | 3.8 | V |
Max. power (@ ∆T = 0K) | max | 3 | W |
Thermistor R0 @ 25 °C | R0 | 10000 | Ω |
Thermistor Beta | B | 3930 |
Spectrum
Power vs Curren
Outline Drawing
Pin | Function | Pin | Function |
1 | TEC (+) | 6 | n/c |
2 | Thermistor | 7 | LD (+) |
3 | Thermistor | 8 | LD (-) |
4 | n/c | 9 | TEC (-) |
5 | n/c |
Absolute maximum ratings
Parameter | Symbol | Unit | min | typical | max |
Operation Voltage | U | V | 3.9 | ||
Max. Current | Imax | mA | 80 | ||
Threshold Current | Ith | mA | 19 | ||
Slope Efficiency | e | mW/mA | 0.352 |
Parameter | Symbol | Unit | min | typical | max |
Wavelength | λ | nm | 3390 | ||
Operation Temperature | T | °C | 20 | 20 | 25 |
Operation Current | I | mA | 44 | ||
Output Power | Popt | mW | 8.6 |
Note:
Caution: Before operating the TEC, the housing must be connected to a suitable heatsink
Note: The cap is no heatsink and not suited to be used as contact with a heatsink. Only use the bottom of the base plate for this purpose.
Note: The cap must not be used as base for any fixtures as e.g. collimation
● TDLAS
● Data Communication
● MIR Testing
TDLAS-DFB-□□□□ -☆-A8▽
□□□□: Wavelength
3000: 3000nm
*****
4000: 4000nm
☆: Output Power
A: 5mW
B: 10mW
▽: Wavelength Tolerance
1: ±1nm
2: ±2nm