SPL ENxx
No Optics
SPL EYxx
Fast-Axis Collimation
Actively Cooled Diode Laser Stack, cw
2002-06-15
1
Features
Uncollimated (EN-series) or fast-axis
collimated radiation (EY-series)
Modular stack of 1 cm bars actively cooled, for
cw operation
Highly reliable strained layer InGa(Al)As/GaAs
material with MTTF > 10000 h
Low thermal resistance using mini coolers
Flexible stack design, integration of up to
60 bars
Optional alternative bar-to-bar spacing values
available
Bar replacement capability for repair / upgrade
Low smile (< 1
m), and low mechanical
tolerances
Coolant inlet/outlet at bottom/side
Extendable to two-dimensional stacks, TN, TY
resp.
Type
Wavelength
1)
1)
Other wavelengths in the range of 780 nm ... 980 nm are available on request.
Ordering Code
SPL EN81
808 nm
on request
SPL EN94
940 nm
on request
SPL EN98
975 nm
on request
SPL EY81
808 nm
on request
SPL EY94
940 nm
on request
SPL EY98
975 nm
on request
Applications
Pumping of solid state lasers (Nd: YAG,
Yb: YAG, ...)
Direct industrial applications (soldering, surface
treatment, marking, ...)
Heating, illumination
Medical and printing applications
Safety Advices
Depending on the mode of operation, these
devices emit highly concentrated non visible
infrared light which can be hazardous to the
human eye. Products which incorporate these
devices have to follow the safety precautions
given in IEC 60825-1 "Safety of laser products".
2002-06-15
2
SPL ENxx, SPL EYxx
Maximum Ratings (
T
A
= 20
C mount temperature)
Parameter
Symbol
Values
Unit
min.
max.
Number of bars EN-type
Number of bars EY-type
n
2
2
60
31
Output power (continuous wave) per bar
1)
P
cw
35
50
W
Operating temperature
2)
T
op
10
+ 60
C
Storage temperature
2)
T
stg
40
+ 85
C
Max. coolant pressure
P
max
5
bar
1)
Optical power is measured by coupling into an integrating sphere.
2)
Condensation must be avoided.
SPL ENxx, SPL EYxx
2002-06-15
3
Diode Characteristics (
T
A
= 20
C mount temperature)
Parameter
Symbol
Values
Unit
min.
typ.
max.
Output power, cw per bar
1)
P
op
35
40
50
W
Emission wavelength
2)
peak
808
940
975
nm
Spectral width (FWHM)
2)
4
nm
Threshold current, cw-type
808 nm
I
th, cw
16
20
A
940 nm
12
14
975 nm
12
14
Differential efficiency
1)
808 nm
P
/
I
1.1
W/A
940 nm
0.9
975 nm
0.9
Fast-axis collimation efficiency
EY-Series
into beam divergence
col
90
%
Operating current, cw-type
2)
I
op, cw
52
A
Operating voltage (per bar)
1)2)
V
op
1.75
V
Overall efficiency
EN-Series
40
45
%
Beam divergence (half angle)
3) 4)
EN-Series
||
35
6
deg.
EY-Series
0.5
6
Thermal resistance
R
th
0.5
K/W
Temperature coefficient of operating current
1)
I
op
/
I
op
T
0.5
%/K
Temperature coefficient of wavelength
1)
/
T
0.27
nm/K
Coolant flow rate (per bar)
dV
/
dT
0.35
0.5
l/min
Pressure drop
4)
P
2.0
bar
1)
Depending on emission wavelength.
2)
Standard operating conditions refer to 40 W cw optical output power at 20 C. Optical power measurements refer to
an integrating sphere.
3)
Far field divergence refers to half angle at 1/e
2
relative intensity.
4)
Depending on number of bars.
SPL ENxx, SPL EYxx
2002-06-15
4
Optical Characteristics (
T
A
= 20
C mount temperature)
Optical Output Power
P
opt
vs.
Forward Current
I
F
cw-device, 10 bars, SPL ENxx
Optical Output Power
P
opt
vs.
Forward Current
I
F
cw-device, 10 bars, SPL EYxx
I
OHW00921
0
0
10
20
30
40
50
A 70
100
200
300
400
500
600
0
5
10
15
20
W
V
V
P
opt
V
I
OHW01242
0
0
10
20
30
40
50
A 70
100
200
300
400
500
600
0
5
10
15
20
W
V
V
P
opt
P
V
2002-06-15
5
SPL ENxx
Package Outlines
Dimensions are specified as follows: mm (inch).
GWOY6036
12 (0.472)
4 (0.157)
12.1 (0.476)
20.7 (0.815)
36 (1.417)
50 (1.969)
M3 (0.118) x 7 (0.276)
M3 (0.118) x 7 (0.276)
5 (0.197)
5 (0.197)
10.8 (0.425)
33.1 (1.303)
(53.3 (2.098))
cathode
anode
15.12 (0.595)
9.65 (0.380)
11.15 (0.439)
SPL ENxx
SPL EYxx
2002-06-15
6
Dimensions are specified as follows: mm (inch).
For safety, unpacking, handling, mounting and operating issues, please carefully read our "Notes For
Operation
II
".
GWOY6037
43 (1.693)
110 (4.331)
40 (1.575)
10 (0.394)
Laser Beam Width
93.5 (3.681)
8.5 (0.335)
66.3 (2.610)
25 (0.984)
8.4 (0.331)
M3 (0.118) - 5 deep (4x)
43.9 (1.728)
23.5 (0.925) max.
10.5 (0.413)
Laser Beam Height
max. 15 Laser
25 (0.984)
4.5 (0.177)
8.4 (0.331)
M3 (0.118) - 5 deep
33 (1.299)
20 (0.787)
18 (0.709)
12.9 (0.508)
49.3 (1.941)
11.5 (0.453)
intern 5 (0.197)
Water OUT
Negative
Positive
M5 (0.197) - 6 deep (2x)
Desiccant cartridge
Tube 8 (0.315) x 1 (0.039)
19.9 (0.783)
G 1/8
SW 17
O-Ring
17 (0.669)
(4 x both sides)
contact
terminal
contact
terminal
40 %
+
-
7 (0.276)
33.4 (1.315)
39 (1.535)
46.4 (1.827)
SPL EYxx
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