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