RLD2WMUV2
Laser Diodes
1/2
DVD-ROM / player single mode 2wavelength
laser diode
RLD2WMUV2
This is monolithic type single mode 2wavelength laser diode. With our original technology, realized low threshold current
and excellent temperature characteristic. This laser diode is suitable for DVD-ROM and DVD-player.
Applications
DVD-ROM
DVD player
Features
1) Optimization of a strained multi quantum well realizes
the reduction in threshold current, and the good
temperature characteristic.
2) Low threshold current.
785nm : 18mA (Tc=25
C)
655nm : 20mA (Tc=25
C)
3) Low noise is realized by high frequency modulation
(BU9369FVM)element.
4) Emission point distance : 110
m
External dimensions
Unit : mm
Equivalent circuit diagram
90
2
0.4
0.1
1.0
0.1
5.6
+
0
-
0.025
2.0
0.2
3.6
4.4 max
1.6
0.1
0.5min.
3
-
0.45
1.2max.
0.5max.
1.2
0.1
2.3
0.2
6.5
0.5
Laser chip
Sub-mount
mechanical height
1.18
0.08
3
2
4
1
L.D.
L.D.
P.D.
(2)
(1)
(3)
(4)
M type
Open Package
Absolute maximum ratings
Tc=25
C
785nm
Parameter
Output
Laser
Operating temperature
Storage temperature
P
O
V
R
V
R(PIN)
Tstg
Topr
PIN photodiode
7
2
30
-
10 to
+
70
-
40 to
+
85
mW
V
V
Symbol
Limits
Unit
C
C
655n
Parameter
Output
Laser
Operating temperature
Storage temperature
P
O
V
R
V
R(PIN)
Tstg
Topr
PIN photodiode
7
2
30
-
10 to
+
70
-
40 to
+
85
mW
V
V
Symbol
Limits
Unit
C
C
Reverse
voltage
Reverse
voltage
RLD2WMUV2
Laser Diodes
2/2
Electrical and optical characteristics
Tc=25
C
785n
Parameter
//
and
are defined as the angle within which the intensity is 50% of the peak value.
Symbol
Min.
Typ.
Max.
Unit
Conditions
Threshold current
I
th
mA
-
18
50
-
-
Operating current
I
op
mA
-
30
60
P
O
=
5mW
P
O
=
5mW
P
O
=
5mW
P
O
=
5mW
P
O
=
5mW
P
O
=
5mW
P
O
=
5mW
Monitor current
I
m
mA
0.1
0.25
0.5
Parallel diveragence angle
//
deg
7
10
15
Perpendicular divergence angle
deg
25
32
39
Parallel deviation angle
//
deg
-
2
0
+
2
Peak emission wavelength
nm
770
785
810
P
O
=
5mW
Astigmatism
m
-
-
10
P
O
=
5mW
Perpendicular deviation angle
deg
-
3
0
+
3
Emission point accuracy
Y
Z
X
m
-
80
0
+
80
-
Operating voltage
V
op
V
-
1.9
2.3
Differential efficiency
mW/mA
0.2
0.55
0.8
655n
Parameter
Symbol
Min.
Typ.
Max.
Unit
Conditions
Threshold curret
I
th
mA
-
20
50
-
-
Operating current
I
op
mA
-
28
60
P
O
=
5mW
P
O
=
5mW
P
O
=
5mW
P
O
=
5mW
P
O
=
5mW
P
O
=
5mW
P
O
=
5mW
Monitor current
I
m
mA
0.1
0.14
0.5
Parallel diveragence angle
//
deg
7
8
10
Perpendicular divergence angle
deg
20
27
35
Parallel deviation angle
//
deg
-
2
0
+
2
Peak emission wavelength
nm
645
655
662
P
O
=
5mW
Astigmatism
m
-
-
10
P
O
=
5mW
Perpendicular deviation angle
deg
-
3
0
+
3
Operating voltage
V
op
V
-
2.3
2.7
Differential efficiency
mW/mA
0.4
0.7
1.0
//
and
are defined as the angle within which the intensity is 50% of the peak value.
Electrical and optical characteristics curves
Tc=25
C
Fig.1 785nm Optical output
vs. operating current
6
8
10
4
2
0
5
75
1
25
0
1
2
3
0
0
20
5
0
1
1.5
2
40
60
80
100
PO
(mW)
Se
(W/A)
Vf
(V)
Im
(mA)
IL
If
(mA)
Fig.2 655nm Optical output
vs. operating current
6
5
7
4
3
2
1
0
6
8
1
4
2
0
2
1
3
4
5
0
0
20
10
25
0
5
75
1
40
30
60
50
80 90
70
100
PO
(mW)
Se
(W/A)
Vf
(V)
Im
(mA)
IL
If
(mA)
7
1
2
3
4
5
6
0
0
0.1
0.2
0.3
0.4
OPTICAL INTENSITY :
P
O
(mW)
MONITOR CURRENT : I
m
(mA)
Fig.3 Monitor current
vs. optical output
655mm
785mm
Appendix
Appendix1-Rev1.1
The products listed in this document are designed to be used with ordinary electronic equipment or devices
(such as audio visual equipment, office-automation equipment, communications devices, electrical
appliances and electronic toys).
Should you intend to use these products with equipment or devices which require an extremely high level of
reliability and the malfunction of with would directly endanger human life (such as medical instruments,
transportation equipment, aerospace machinery, nuclear-reactor controllers, fuel controllers and other
safety devices), please be sure to consult with our sales representative in advance.
Notes
No technical content pages of this document may be reproduced in any form or transmitted by any
means without prior permission of ROHM CO.,LTD.
The contents described herein are subject to change without notice. The specifications for the
product described in this document are for reference only. Upon actual use, therefore, please request
that specifications to be separately delivered.
Application circuit diagrams and circuit constants contained herein are shown as examples of standard
use and operation. Please pay careful attention to the peripheral conditions when designing circuits
and deciding upon circuit constants in the set.
Any data, including, but not limited to application circuit diagrams information, described herein
are intended only as illustrations of such devices and not as the specifications for such devices. ROHM
CO.,LTD. disclaims any warranty that any use of such devices shall be free from infringement of any
third party's intellectual property rights or other proprietary rights, and further, assumes no liability of
whatsoever nature in the event of any such infringement, or arising from or connected with or related
to the use of such devices.
Upon the sale of any such devices, other than for buyer's right to use such devices itself, resell or
otherwise dispose of the same, no express or implied right or license to practice or commercially
exploit any intellectual property rights or other proprietary rights owned or controlled by
ROHM CO., LTD. is granted to any such buyer.
Products listed in this document are no antiradiation design.
About Export Control Order in Japan
Products described herein are the objects of controlled goods in Annex 1 (Item 16) of Export Trade Control
Order in Japan.
In case of export from Japan, please confirm if it applies to "objective" criteria or an "informed" (by MITI clause)
on the basis of "catch all controls for Non-Proliferation of Weapons of Mass Destruction.
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