117
HL6319/20G
AlGaInP Laser Diodes
Description
The HL6319/20G are 0.63 µm band AlGaInP laser diodes with a multi-quantum well (MQW) structure.
They are suitable as light sources for laser levelers and optical equipment for measurement.
Application
Laser levelers
Measurement
Features
Visible light output: 635nm Typ (nearly equal to He-Ne gas laser)
Optical output power: 10 mW CW
Low operating current: 95 mA Max
Low operating voltage: 2.7 V Max
LD LDPD PD
1 1
3 3
2
Internal Circuit
HL6319G Internal Circuit
HL6320G
Package Type
HL6319/20G: G2
2
HL6319/20G
118
Absolute Maximum Ratings (TC = 25°C)
Item Symbol Value Unit
Optical output power PO10 mW
LD reverse voltage VR(LD) 2V
PD reverse voltage VR(PD) 30 V
Operating temperature Topr –10 to +50 °C
Storage temperature Tstg –40 to +85 °C
Optical and Electrical Characteristics (TC = 25°C)
Item Symbol Min Typ Max Unit Test Conditions
Optical output power PO10 mW Kink free
Threshold current Ith 20 50 75 mA
Operating current IOP —7095mAP
O
= 10 mW
Operating voltage VOP 2.7 V PO = 10 mW
Slope efficiency ηs 0.3 0.5 0.7 mW/mA 6(mW)/(I(8mW)–I(2mW))
Lasing wavelength λp 625 635 640 nm PO = 10 mW
Beam divergence
(parallel) θ// 5 8 11 deg. PO = 10 mW
Beam divergence
(perpendicular) θ⊥ 25 31 37 deg. PO = 10 mW
Monitor current Is 0.05 0.17 0.30 mA PO = 10 mW, VR(PD) = 5 V
HL6319/20G
119
Typical Characteristics Curves
Slope Efficiency vs.Case Temperature
Case Temperture, T
C
(°C)
100 10203050
Slope Efficiency, ηs (mW/mA)
0
0.2
0.4
0.6
0.8
1.0
Optical output power, PO (mW)
10
8
6
4
2
00100 200
Foward current I (mA)
F
50°C
25°C
Optical Output Power vs.Foward Current
Optical output power, P (mW)
Monitor current, I (mA)
s
o
0.20
0.15
0.10
0.05
0 246810
V
R(PD)
=5 V
T
C
=25°C
Optical Output Power vs.Monitor Current
10 0 10 20 30 40
200
100
20
Threshould current I (mA)
th
Case temperature, T (°C)
C
Threshold Current vs.Case Temperature
50
50
T
C
= 10°C
HL6319/20G
120
Lasing Spectrum
Wavelength λp (nm)
625 630 635 640 645 650
Relative intensity
PO=1 mW
PO=5 mW
PO=10 mW
TC=25°C
Lasing Wavelength vs. Case Temperature
Case Temperture, TC (°C)
01020304050
Lasing wavelength, λp (nm)
630
635
645
650
640
PO=10 mW
10
Polarization Ratio vs.
Optical Output Power
Optical output power PO (mW)
0246810
Polarization Ratio
0
200
400
600
800
NA=0.4
TC=25°C
Monitor Current vs. Case Temprature
Case Temperture, TC (°C)
10 010
20 30 40
Monitor current, IS (mA)
0
0.1
0.2
0.3
0.4 PO=10 mW
VR=5 V
50
HL6319/20G
121
8
6
4
2
002 64
T
C
= 25°C
NA= 0.55
810
Optical output power, PO (mW)
Astigmastism, AS (µm)
Astigmastism vs. Optical Output Power
10
0.2
0.4
0.6
0.8
1.0
40 20 0 20 40
Forward current, IF (deg)
Relative intensity
0Parallel
Perpendicular
Far Field Pattern
PO=10 mW
TC=25°C
30 10 10 30
HL6319/20G
122
Polarization direction
The polarization direction is TM mode. The polarization of 0.63 µm LD’s is different from that of
0.83/0.78/0.67 µm LD’s. The polarization direction of 0.63 µm LD’s is illustrated in the figure below.
Electric field
TM mode
Magnetic field
LD
Top view
Hitachi Code
JEDEC
EIAJ
Weight
(reference value)
LD/G2
1.1 g
Unit: mm
123
1
2
3
9.0
+0
–0.025
φ1.0 ± 0.1
0.4+0.1
–0
(0.65)
(90°)
φ
7.2 +0.3
–0.2
φ
φ6.2 ± 0.2
( 2.0)
φ
Emitting Point
2.45
1.5 ± 0.1
9 ± 1
3 – 0.45 ± 0.1
3.5 ± 0.2 0.3
Glass
φ2.54 ± 0.35
Datasheet Title
4
Cautions
1. Hitachi neither warrants nor grants licenses of any rights of Hitachi’s or any third party’s patent,
copyright, trademark, or other intellectual property rights for information contained in this document.
Hitachi bears no responsibility for problems that may arise with third party’s rights, including
intellectual property rights, in connection with use of the information contained in this document.
2. Products and product specifications may be subject to change without notice. Confirm that you have
received the latest product standards or specifications before final design, purchase or use.
3. Hitachi makes every attempt to ensure that its products are of high quality and reliability. However,
contact Hitachi’s sales office before using the product in an application that demands especially high
quality and reliability or where its failure or malfunction may directly threaten human life or cause risk
of bodily injury, such as aerospace, aeronautics, nuclear power, combustion control, transportation,
traffic, safety equipment or medical equipment for life support.
4. Design your application so that the product is used within the ranges guaranteed by Hitachi particularly
for maximum rating, operating supply voltage range, heat radiation characteristics, installation
conditions and other characteristics. Hitachi bears no responsibility for failure or damage when used
beyond the guaranteed ranges. Even within the guaranteed ranges, consider normally foreseeable
failure rates or failure modes in semiconductor devices and employ systemic measures such as fail-
safes, so that the equipment incorporating Hitachi product does not cause bodily injury, fire or other
consequential damage due to operation of the Hitachi product.
5. This product is not designed to be radiation resistant.
6. No one is permitted to reproduce or duplicate, in any form, the whole or part of this document without
written approval from Hitachi.
7. Contact Hitachi’s sales office for any questions regarding this document or Hitachi semiconductor
products.
1. The laser light is harmful to human body especially to eye no matter what directly or indirectly. The
laser beam shall be observed or adjusted through infrared camera or equivalent.
Datasheet Title
5
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