Roithner G081PU1600M Laser diode module Datasheet

Manual of 808nm Fiber Coupled
Laser Diode Module
G081PU1600M
G081PU1750M
G081PU11500M
G081PU25W
G081PU210W
G081PU315W
G081PU325W
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1 Introduction
Thank you for choosing this high power fiber coupled Laser Diode for your application.
Please read that manual carefully before using this product. If there is any question about
this manual, please contact us.
The 808nm series high power fiber coupled Laser Diodes with optimized QW structure
have a high reliability, high performance. The MOCVD technical is used for epitaxy to get a
high quality epi-wafer. The 808nm series high power fiber coupled Laser Diode module
can get up to 25W multimode fiber coupled output at CW and N.A. 0.12 & 0.22. It can be
applied in a wide field such as laser pumps, medical, target designator, free-space
communication.
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2 Specifications
optical and electrical specification
Type
G081PU
1600M
G081PU
1750M
G081PU
11500M
G081PU
25W
G081PU
210W
G081PU
315W
G081PU
325W
Optical specification
Rated output optical power Pf* (W)
0.6
0.75
1.5
5
10
12
25
808
800-820
<4
808
800-820
<4
808
800-820
<4
808
800-820
<5
808
800-820
<5
808
800-820
<7(4)
808
800-820
<7(4)
0.3
0.3
0.3
0.3
0.3
0.3
0.3
50
100
400
400
0.22
0.22
0.22
(0.12)
1
1
1
FC/ST/SMA-905
700
700
0.12
0.22
1
100
0.22
(0.12)
1
1
1
≤250
≤250
≤500
≤250
≤500
≤250
≤500
Operating current Io (mA)
≤1250
≤1250
≤2500
≤1250
≤2500
≤1250
≤2500
Operating voltage Vf* (V)
<2
<2
<2
<14
<14
<35
<35
Slope efficiency Es* (W/A)
>0.6
>0.75
>0.75
>5
>5
>12
>12
Resistance Rd* (Ω)
<0.2
<0.2
P1- Package
Central Wavelength λc* (nm)
Central Wavelength λc* (nm)
Central Wavelength tolerance (nm)
Wavelength temperature
coefficient (nm/°C)
Fiber specification
Fiber Core Size (µm)
N.A.
Fiber length (m)
0.22
Connector
Electrical specification
Threshold current Ith* (mA)
Package
Reverse Voltage Vr (V)
<0.2
<1.4
P2- Package
<1.4
<3.5
<3.5
P3- Package
2
2
2
14
14
35
35
operating temperature To (°C)
-10...45
-10...45
-10...45
-10...45
-10...45
-10...45
-10...45
Storage temperature Tstg (°C)
-40...70
-40...70
-40...70
-40...70
-40...70
-40...70
-40...70
Parameter notes:
* Rated output optical power PF: Laser Diode output power rating.
* Central Wavelength λc & Spectral width Δλ: While the laser diode is at its rated output optical power, the
wavelength at its emission spectrum curve with highest relative strengths is the central wavelength
λc, the wavelength width between 1/2 highest strengths of both sides of the emission spectrum is
Δλ.
* Threshold current Ith: Current when Laser Diode begins lasing.
* Operating current Io: Current when Laser Diode at rated output power.
* Operating voltage Vf: Voltage of both ends of the Laser Diode when it at rated output power.
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* Slope efficiency Es: Characterization of the photo electronic conversion efficiency of Laser Diode after
the lasing begins; Es=ΔP/ΔI, where ΔP is the increment of output power corresponding to the
increment of driving current ΔI.
* Resistance Rd: Rd=ΔV/ΔI, where ΔV is the increment of voltage of laser diode corresponding to the
increment of driving current ΔI.
Typical P-I/V-I curve
Note: The testing sample is part# G081PU11500M.
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Dimension size
P1 Package Dimensions:
PD+
PD LD LD +
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P2 Package Dimensions:
P3 Package Dimensions:
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3 Laser safety operating instructions
Laser usage requirements in environment
 A ultra-clean environment should be provided for operating the LD. The operating
temperature should be controlled at –10 °C … 45 °C.
 Laser safety warning signs should be posted in the working place.
The requirements on the power supply driving the LD
 Constant-current should be available for power supply. The power supply should have
the ability to avoid current or voltage surge at any condition (during start-up,
intermittence or open circuit). The surge would result in instant increase of optical
power, which can cause COMD (catastrophic optical mirror damage).
 High power Laser Diodes could operate in forward voltage. The reverse current and
voltage should not be higher than 25 µA and 3 V, respectively.
Laser operating requirements
 Please check the laser safeguard before used the LD. More information about the laser
safe is mentioned in “laser safe” section of this manual.
 The semiconductor Laser Diode is a sensitive electronic device. Do not ship or store
near strong electrostatic, electromagnetic, magnetic or radioactive fields. Please
observe precaution for handling electrostatic sensitive devices, such as wearing antistatic wrist straps, use anti-static packaging material and tools when operation.
 Shut off the power supplier before connecting the LD with the power supplier. To shut
off the LD please decrease the current to zero gradually then shut off the power supply.
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 The operating current of laser must not be higher than the given rate current. The
excessive current would accelerate aging and shorten lifetime, even damage the LD.
 Keep the fiber pigtail clean. In non-working environment, you must use the protection
case to avoid fiber pigtail from being polluted. If you need to clean the fiber pigtail, use
ethanol or water-free alcohol cotton balls and wipe fiber pigtail gently.
Fiber pigtail
Fiber pigtail
protection case
Fiber pigtail
protection case
a)
b)
Fiber pigtail
 LD must be taken out of the fiber protection case before it starts to work.
 Please remove the short-circuit bridge when you want the laser to work. In non-working
environment, the short-circuit bridge must be used between electrodes to protect laser.
It is especially important to use the short-circuit bridge when you weld the electrodes.
Short-circuit
bridge
a)
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Short-circuit
bridge
b)
 When laser is working, please don’t point it straight to the fiber as shown below the
yellow part, in order to prevent the fiber protection case from being damaged by highpower laser generated heat.
 Bending diameter of the fiber cannot be allowed to be less than 4cm. When bending
the fiber, please make sure the starting point is away larger than 4cm from the fiber
root. When moving the laser, please don`t directly use fiber (yellow part). Not obeying
these rules may cause fracture of the laser fiber from the root.
Fiber root
Fiber protection case
Bending diameter D:
D≥4cm
 Make sure that the module and the fiber are in the same plane.
√
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×
Cooling system
High-power semiconductor Laser Diodes are temperature-sensitive devices. High
temperature will affect its performance. Its lifetime may also be shortened by working at
high temperature. So the generated heat must be removed in time when the LD is working.
Water cooling system or TEC system is recommended for keeping the LD working at
appropriate temperature.
4 Laser safety instructions
High power laser diodes are high energy laser devices. It is harmful to human body and
health. Any personnel working with or around open lasers must be aware of the following:
•
Exposure to the laser beam may cause physical burns and can cause severe eye
damage. Proper eye protection should be used at all times. All eye protection should
be appropriate for the radiation wavelength generated by the laser in use.
•
Exposure to the laser beam may cause ignition of volatile or combustible materials.
•
Never look directly into the laser output port.
•
Interlock all rooms in which open beams may be present and post appropriate
warnings on or near the doors. Access to these rooms should be limited to properly
trained technicians when lasers are in use.
•
Use appropriate protective coverings over all beam paths whenever possible.
•
Lasers and optical elements should be positioned to keep the beam and reflections
below eye level.
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