EYP-DFB-0795-00080-1500-BFW01-0005
SINGLE FREQUENCY LASER DIODES
Distributed Feedback Laser
General Product Information
Product
795 nm DFB Laser
with hermetic 14-Pin Butterfly Housing (RoHS compliant)
including Monitor Diode, Thermoelectric Cooler and Thermistor
with integrated Beam Collimation
Application
Spectroscopy (Rb D1 line)
Metrology
Absolute Maximum Ratings
Parameter
Symbol
Unit
min
typ
max
Measurement Conditions / Comments
Storage Temperature
TS
°C
-40
85
Stress in excess of one of the Absolute Maximum
Ratings may damage the laser. Please note that a
damaging optical power level may occur although the
maximum current is not reached. These are stress
ratings only, and functional operation at these or any
other conditions beyond those indicated under
Recommended Operational Conditions is not implied.
Operational Temperature at Case
TC
°C
-40
85
Operational Temperature at Laser Chip
TLD
°C
10
50
Forward Current
IF
mA
170 Reverse Voltage
VR
V
2 Output Power
Popt
mW
90 TEC Current
ITEC
A
1.1 TEC Voltage
VTEC
V
2.8
Recommended Operational Conditions
Parameter
Symbol
Unit
min
typ
max
Measurement Conditions / Comments
Operational Temperature at Case
Tcase
°C
-20
65
Operational Temperature at Laser Chip
TLD
°C
15
45
measured by integrated Thermistor
Forward Current
IF
mA
160
Output Power
Popt
mW
20
80
Characteristics at TLD = 25° at BOL
Parameter
Symbol
Unit
min
typ
max
Measurement Conditions / Comments
Center Wavelength
λC
nm
794
795
796
see images on page 4
Target Wavelength
λT
nm
794.98
reached within TLD 15 ° ... 45° C at 80 mW
Linewidth (FWHM)
Δλ
MHz
0.6
1.0
Mode-hop free Tuning Range
Δλtune
pm
25
> 10 GHz, at target wavelength
Sidemode Supression Ratio
SMSR
dB
30
45
Popt = 80 mW
Temperature Coefficient of Wavelength
dλ / dT
nm / K
0.06
Current Coefficient of Wavelength
dλ / dI
nm / mA
0.003
Characteristics at TLD = 25° at BOL cont'd
Parameter
Symbol
Unit
min
typ
max
Measurement Conditions / Comments
Laser Curren @ Popt = 80 mW
ILD
mA
160
Slope Efficiency
η
W / A
0.6
0.8
1.1
Threshold Current
Ith
mA
70
Divergence parallel (FWHM)
Θ‖
°
0.1
parallel to the base plate of the housing
Divergence perpendicular (FWHM)
Θ⊥
°
0.1
perpendicular to base plate of the housing
Beam Diameter horizontal
d‖
mm
1.0
1.2
parallel to the base plate of the housing
Beam Diameter vertical
d⊥
mm
0.8
1.2
perpendicular to base plate of the housing
Degree of Polarization
DOP
%
99
Popt = 80 mW; vertical polarization
Monitor Diode
Parameter
Symbol Unit
min
typ
max
Measurement Conditions / Comments
Monitor Detector Responsivity
Imon / Popt μA/mW
1
20
UR = 5 V
Thermoelectric Cooler
Parameter
Symbol
Unit
min
typ
max
Measurement Conditions / Comments
Current
ITEC
A
0.4
Popt = 80 mW, ΔT = 20 K
Voltage
UTEC
V
1.3
Popt = 80 mW, ΔT = 20 K
Power Dissipation (total loss at case)
Ploss
W
0.4
Popt = 80 mW, ΔT = 20 K
Temperature Difference
ΔT
K
50
Popt = 80 mW, ΔT = |Tcase - TLD|
Thermistor (Standard NTC Type)
Parameter
Symbol
Unit
min
typ
max
Measurement Conditions / Comments
Resistance
R
kΩ
10
TLD = 25° C
Beta Coefficient
β
3892
R1 / R2 = eβ (1/T1 - 1/T2) at TLD = 0° … 50° C
Steinhart & Hart Coefficient A
A
1.1293 x 10 -3 1/T = A + B(ln R) + C(ln R)3
Steinhart & Hart Coefficient B
B
2.3410 x 10 -4 T: temperature in Kelvin
Steinhart & Hart Coefficient C
C
8.7755 x 10 -8 R: resistance at T in Ohm
Pin Assignment
1
Thermoelectric Cooler (+)
14
Thermoelectric Cooler (-)
2
Thermistor
13
Case
3
Photodiode (Anode)
12
not connected
4
Photodiode (Cathode)
11
Laser Diode (Cathode)
5
Thermistor
10
Laser Diode (Anode)
6
not connected
9
not connected
7
not connected
8
not connected
All 14 pins are isolated from case.
Package Drawings
Typical Measurement Results
Performance figures, data and any illustrative material provided in this specification are typical and must be specifically confirmed in writing by eagleyard Photonics before they become applicable to any particular order or contract. In accordance with the eagleyard Photonics policy of continuous improvement specifications may change without notice.
商品属性 [波长] 795 nm [功率] 80 mW [激光器类型] DFB [封装方式] Butterfly with Window