LED38-TEC Datasheet, PDF (1/1 Pages) Roithner LaserTechnik GmbH – LIGHT EMITTING DIODES

LIGHT EMITTING DIODES 1.6÷4.6 µm
Model LED38-TEC
•Light Emitting Diodes LED38-TEC are designed for emitting at a spectral range
around 3800 nm. Thermocooler and thermoresistor are mounted inside 9 mm
package TO-5. Heterostructures (HS) are grown on InAs substrates
•Light Emitting Diodes LED38-TEC are developed for using in optical gas
sensors and medical diagnostics. Such construction gives possibility for
temperature stabilization of LED parameters. Lifetime is more then 10000 hours.
•Related products: Our standard LED Driver provides power supply of
LED38-TEC in two recommended here regimes (Quasi-CW and Pulsed).
3.8 µm 16 µW
Parameters
Wavelength, µm
FWHM, µm
Optical Power, µW
Quasi-CW @ 200 mA
Pulsed@2A
Switching Time, ns
Range of temperature
control ^oC
Emitting Area, µm
Soldering
temperature
Package
Min
3.70
0.60
Typ
3.80
0.70
Max
3.90
0.80
12
16
20
180 200 220
10
30
50
-10÷+60
300x300
95 ^oC
TO-5 with thermocooler
and thermistor
Package TO-5
Recommended regimes of
LED operation
Main thermocooler parameters (without load)
Quasi-CW
f=2 kHz
200 mA
I_max
Q_max
U_max ∆T_max
(Amps) (Watts) (Volts) °C
0.7 0.4 1.0 67
50
250 µs 250 µs
Pulsed
1 µs
40
30
2A
f=2 kHz
20
500 µs
10
0
-20
0
20
40
60
Temperature, C
LED38 typical spectra at different temperatures
20
LED chip
Thermoresistor
TEC
LEAD
Thermoresistor
Thermoresistor
TOP SIDE VIEW
15
T=6°C
10
T=21°C
T=50°C
5
0
2200 2600 3000 3400 3800 4200 4600 5000
Wavelength, nm
LED38 - typical power vs. current
characteristic at different temperatures
20
16
12
8
T=6°C
4
T=21°C
T=50°C
0
0 50 100 150 200
Current, mA
LED38 - typical Current-voltage
characteristic
40
30
20
10
0
-2 -1,5 -1 -0,5-10 0 0,5
-20
-30
-40
Voltage, V
Far field pattern
with and without reflector
LED38 (without reflector)
LED38-PR (with reflector)