HL6325/26G
Low Operating Current Visible Laser Diode
ADE-208-781A (Z)
2nd Edition
Jul. 1999
Description
The HL6325/26G are 0.63
m band AlGaInP laser diodes with a multi-quantum well (MQW) structure.
They are suitable as light sources for laser levelers, laser scanners and optical equipment for measurement.
Application
Laser leveler
Laser scanner
Measurement
Features
Visible light output
: 635 nm Typ (nearly equal to He-Ne gas laser)
Optical output power
: 5 mW CW
Low operating current
: 40 mA Typ
Low operating voltage
: 2.4 V Max
Operating temperature
: +60
C
TM mode oscillation
LD
PD
1
3
2
Internal Circuit
HL6325G
Internal Circuit
HL6326G
Package Type
HL6325/26G: G2
LD
3
2
PD
1
HL6325/26G
2
Absolute Maximum Ratings (T
C
= 25
C)
Item
Symbol
Value
Unit
Optical output power
P
O
5
mW
LD reverse voltage
V
R(LD)
2
V
PD reverse voltage
V
R(PD)
30
V
Operating temperature
Topr
10 to +60
C
Storage temperature
Tstg
40 to +85
C
Optical and Electrical Characteristics (T
C
= 25
C)
Item
Symbol
Min
Typ
Max
Unit
Test Condition
Optical output power
P
O
5
--
--
mW
Kink free
Threshold current
Ith
--
30
50
mA
Operating current
I
O
p
--
40
60
mA
P
O
= 5 mW
Operating voltage
V
OP
--
2.2
2.4
V
P
O
= 5 mW
Slope efficiency
s
0.3
0.5
0.8
mW/mA
3(mW) / (I
(4mW)
I
(1mW)
)
Lasing wavelength
p
630
635
640
nm
P
O
= 5 mW
Beam divergence parallel to
the junction
//
6
8
11
deg.
P
O
= 5 mW
Beam divergence
parpendicular to the junction
25
31
37
deg.
P
O
= 5 mW
Monitor current
I
S
0.05
0.1
0.25
mA
P
O
= 5 mW, V
R(PD)
= 5V
HL6325/26G
3
Typical Characteristic Curves
Slope Efficiency vs.
Case Temperature
Case temperature, T
C
(
C)
Case temperature, T
C
(
C)
-
10
0
60
50
40
30
20
10
-
10
0
50
60
40
30
20
10
Slope efficiency,
s (mW/mA)
0
0.2
0.4
0.6
0.8
1.0
Optical output power, P
O
(mW)
6
5
4
3
2
1
0
0
80
70
Forward current, I
F
(mA)
Optical Output Power vs.
Forward Current
Optical output power, P
O
(mW)
Monitor current, I
S
(mA)
0.12
0.10
0.08
0.06
0.04
0.02
0
4
2
1
3
5
0
Monitor Current vs.
Optical Output Power
100
50
10
Threshold current, Ith (mA)
Threshold Current vs.
Case Temperature
20
60
30
10
20
40
50
T
C
=
-
10
C
50
C
60
C
V
R(PD)
= 5 V
T
C
= 25
C
25
C
HL6325/26G
4
Lasing Spectrum
Wavelength,
p (nm)
630
635
640
645
650
Relative intensity
Polarization Ratio vs.
Optical Output Power
Optical output power, P
O
(mW)
0
3
2
1
4
5
Polarization ratio
0
100
200
300
400
Monitor Current vs.
Case Temperature
-
10
0
10
20
30
40
Monitor current, I
S
(mA)
0
0.05
0.10
0.15
0.20
50
60
500
Case temperature, T
C
(
C)
Lasing Wavelength vs.
Case Temperature
Lasing Wavelength,
p (nm)
630
635
645
650
640
-
10
0
10
20
30
40
50
60
Case temperature, T
C
(
C)
P
O
= 5 mW
P
O
= 3 mW
P
O
= 1 mW
T
C
= 25
C
P
O
= 5 mW
V
R
= 5 V
P
O
= 5 mW
T
C
= 25
C
NA = 0.4
HL6325/26G
5
4
3
2
1
0
0
1
3
2
4
5
Astigmatism, A
S
(
m)
Astigmatism vs.
Optical Output Power
5
100
80
60
40
20
0
Survival rate (%)
Applied voltage (kV)
Electrostatic Destruction (Reverse)
0
2
3
1
0.5
1.5
2.5
Forward
(C : 100 pF, R : 1.5 k
)
N = 10 pcs
judgment :
I
O
10%
Reverse
(C : 100 pF, R : 1.5 k
)
N = 10 pcs
judgment :
I
O
10%
0.2
0.4
0.6
0.8
1.0
-
40
-
30
-
20
-
10
0
40
30
20
10
Angle,
(deg.)
Relative intensity
0
Far Field Pattern
0
400
200
600
100
80
60
Survival rate (%)
40
20
0
Applied voltage (V)
Electrostatic Destruction (Forward)
Optical output power, P
O
(mW)
P
O
= 5 mW
T
C
= 25
C
T
C
= 25
C
NA = 0.4
Parallel
Perpendicular
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