High-Power Density 2W Laser Diode
Description
The SLD324ZT is a gain-guided, high-power density laser diode with a built-in TE cooler. A new flat, square
package with a low thermal resistance and an in-line pin configuration is employed. Fine tuning of the
wavelength is possible by controlling the laser chip temperature.
Features
High power
Recommended optical power output: Po = 2.0W
Low operating current: Iop = 2.5A (Po = 2.0W)
Newly developed flat package with built-in photodiode, TE cooler and thermistor
Applications
Solid state laser excitation
Medical use
Material processes
Measurement
Structure
GaAlAs quantum well structure laser diode
Absolute Maximum Ratings (Tth = 25C)
Optical power output
Po
2.2
W
Reverse voltage
V
R
LD
2
V
PD
15
V
Operating temperature (Tth)
Topr
10 to +30
C
Storage temperature
Tstg
40 to +85
C
Operating current of TE cooler
I
T
4.0
A
Pin Configuration (Top View)
1
E93322B81-PS
Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by
any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the
operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits.
SLD324ZT
T
H
LD
TE Cooler
PD
5
6
1
2
11 12
7
8
9
10
3
4
1
12
No.
1
2
3
4
5
6
Function
TE Cooler (negative)
TE Cooler (negative)
Thermistor
Thermistor
LD (anode)
LD (anode)
No.
7
8
9
10
11
12
Function
LD (cathode)
LD (cathode)
PD (cathode)
PD (anode)
TE Cooler (positive)
TE Cooler (positive)
Equivalent Circuit
2
SLD324ZT
Electrical and Optical Characteristics
(Tth: Thermistor temperature, Tth = 25C)
Handling Precautions
Eye protection against laser beams
The optical output of laser diodes ranges from
several mW to 3W. However the optical power
density of the laser beam at the diode chip
reaches 1MW/cm
2
. Unlike gas lasers, since
laser diode beams are divergent, uncollimated
laser diode beams are fairly safe at a laser
diode. For observing laser beams, ALWAYS use
safety goggles that block infrared rays. Usage of
IR scopes, IR cameras and fluorescent plates is
also recommended for monitoring laser beams
safely.
Item
Symbol
Conditions
Min.
Typ.
Max.
Unit
Ith
Iop
Vop
p
Imon
//
X,
Y
D
Rth
Threshold current
Operating current
Operating voltage
Wavelength
1
Monitor current
Radiation angle
(F. W. H. M.
)
Positional accuracy
Differential efficiency
Thermistor resistance
P
O
= 2.0W
P
O
= 2.0W
P
O
= 2.0W
P
O
= 2.0W
V
R
= 10V
P
O
= 2.0W
P
O
= 2.0W
P
O
= 2.0W
Tth = 25C
790
0.15
20
4
0.65
0.6
2.5
2.2
0.8
30
9
1.0
10
1.0
3.5
3.0
840
3.0
40
17
100
3
A
A
V
nm
mA
degree
degree
m
degree
W/A
k
Perpendicular
Parallel
Position
Angle
1
Wavelength Selection Classification
Type
SLD324ZT-1
SLD324ZT-2
SLD324ZT-3
Wavelength (nm)
795 5
810 10
830 10
Type
SLD324ZT-21
SLD324ZT-24
SLD324ZT-25
Wavelength (nm)
798 3
807 3
810 3
AP
C
ATC
Safety goggles for
protection from
laser beam
IR fluorescent plate
Optical
material
Optical power output control device
temperature control device
Lens
Laser diode
Optical boad
F. W. H. M. : Full Width at Half Maximum
3
SLD324ZT
Example of Representative Characteristics
Optical power output vs. Forward current characteristics
I
F
Forward current [A]
0
0.5
1.5
1
2
2.5
3
3.5
0.5
0
1
1.5
2.5
2
3
P
o
O
p
t
i
c
a
l
p
o
w
e
r
o
u
t
p
u
t
[
W
]
Optical power output vs. Monitor current characteristics
Imon Monitor current [mA]
0
1
0.5
0
1
2
0.5
1.5
2.5
P
o
O
p
t
i
c
a
l
p
o
w
e
r
o
u
t
p
u
t
[
W
]
Threshold current vs. Temperature characteristics
Tth Thermistor temperature [
C]
10
0
10
20
30
0.1
1
I
t
h
T
h
r
e
s
h
o
l
d
c
u
r
r
e
n
t
[
A
]
Dependence of wavelength
Tth Thermistor temperature [
C]
10
0
10
20
30
780
830
820
810
800
790
p
W
a
v
e
l
e
n
g
t
h
[
n
m
]
Power dependence of far field pattern
(Parallel to junction)
Angle [degree]
90
60
30
0
30
60
90
R
a
d
i
a
t
i
o
n
i
n
t
e
n
s
i
t
y
(
o
p
t
i
o
n
a
l
s
c
a
l
e
)
Power dependence of far field pattern
(Perpendicular to junction)
Angle [degree]
90
60
30
0
30
60
90
R
a
d
i
a
t
i
o
n
i
n
t
e
n
s
i
t
y
(
o
p
t
i
o
n
a
l
s
c
a
l
e
)
Tth = 10
C
Tth = 0
C
Tth = 25
C
Tth = 30
C
Tth = 15
C
Tth = 10
C
Tth = 0
C
Tth = 25
C
Tth = 30
C
Tth = 15
C
P
O
= 2.0W
Tth = 25
C
P
O
= 1.5W
P
O
= 1.0W
P
O
= 0.5W
Tth = 25
C
P
O
= 2.0W
P
O
= 2.0W
P
O
= 1.5W
P
O
= 1.0W
P
O
= 0.5W
4
SLD324ZT
0
0.5
1.5
1
D
D
i
f
f
e
r
e
n
t
i
a
l
e
f
f
i
c
i
e
n
c
y
[
m
W
/
m
A
]
Differential efficiency vs. Temperature characteristics
Tth Termistor temperature [
C]
10
0
10
20
30
0
0
5
10
15
10
20
40
30
Q
A
b
s
o
r
b
e
d
h
e
a
t
[
W
]
V
T
P
i
n
v
o
l
t
a
g
e
[
V
]
TE cooler characteristics 1
T Temperature difference [
C]
T: Tc Tth
Tth: Thermistor temperature
Tc: Case temperature
0
20
40
60
80
100
0
0
5
10
15
10
20
40
30
Q
A
b
s
o
r
b
e
d
h
e
a
t
[
W
]
V
T
P
i
n
v
o
l
t
a
g
e
[
V
]
TE cooler characteristics 2
T Temperature difference [
C]
0
20
40
60
80
100
1
5
10
50
R
t
h
T
h
e
r
m
i
s
t
e
r
r
e
s
i
s
t
a
n
c
e
[
k
]
Termistor chacteristics
Tth Termistor temperature [
C]
10 0
10 20 30 40 50 60 70
Tc = 32
C
I
T
= 4A
3A
2A
T vs V
Tth = 25
C
I
T
=
4A
3A
3A
2A
2A
T v
s V
T v
s Q
4
A
3
A
2
A
T
v
s Q
4A
TE cooler characteristics
5
SLD324ZT
Wavelength [nm]
790
0.00
1.00
800
R
e
l
a
t
i
v
e
r
a
d
i
a
n
t
i
n
t
e
n
s
i
t
y
Tth = 25
C
Po = 0.8W
Wavelength [nm]
790
0.00
1.00
800
R
e
l
a
t
i
v
e
r
a
d
i
a
n
t
i
n
t
e
n
s
i
t
y
Tth = 25
C
Po = 1.6W
Wavelength [nm]
790
0.00
1.00
800
R
e
l
a
t
i
v
e
r
a
d
i
a
n
t
i
n
t
e
n
s
i
t
y
Tth = 25
C
Po = 1.2W
Wavelength [nm]
790
0.00
1.00
800
R
e
l
a
t
i
v
e
r
a
d
i
a
n
t
i
n
t
e
n
s
i
t
y
Tth = 25
C
Po = 2.0W
Power dependence of spectrum
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