THORLABS S2011 User manual

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S2011
Page 1 Rev D, August, 29, 2011
Table of Contents
Chapter 1Warning Symbol Definitions ........................................... 2
Chapter 2Safety ................................................................................. 3
Chapter 3System Description .......................................................... 4
Chapter 4Setup and Operation ........................................................ 5
4.1.Setup.............................................................................5
4.2.CWOperation................................................................5
4.3.OperatingandHandlingPrecautions.............................5
Chapter 5Maintenance and Troubleshooting ................................. 6
5.1.MaintenanceoftheLDS1PowerSupply.........................6
5.1.1.Setting the LDS1 AC Line Voltage .............................................. 6
5.1.2.Fuse Replacement ...................................................................... 6
5.2.Troubleshooting............................................................6
Chapter 6Specifications ................................................................... 7
Chapter 7Mechanical Drawing ......................................................... 8
Chapter 8Regulatory ......................................................................... 9
Chapter 9Thorlabs Worldwide Contacts....................................... 10

S2011 Chapter 1: Warning Symbol Definitions
Page 2
Chapter 1 Warning Symbol Definitions
Below is a list of warning symbols you may encounter in this manual or on your
device.
Symbol Description
Direct Current
Alternating Current
Both Direct and Alternating Current
Earth Ground Terminal
Protective Conductor Terminal
Frame or chassis Terminal
Equipotentiality
On (Supply)
Off (Supply)
In Position of a Bi-Stable Push Control
Out Position of a Bi-Stable Push Control
Caution, Risk of Electric Shock
Caution, Hot Surface
Caution, Risk of Danger
Warning, Laser Radiation
Caution, Spinning Blades May Cause Harm

S2011
Page 3 Rev D, August, 29, 2011
Chapter 2 Safety
SHOCK WARNING
The LDS1 operates from AC voltages, which are potentially harmful and could
cause serious injury. Turn the LDS1 power switch OFF and unplug the AC line
BEFORE attempting to perform any.
WARNING: LASER RADIATION
This device is a Class 3R laser product. Appropriate precautions, which
include never looking directly into the laser modules output and wearing
appropriate eye protection, should be taken at all times.
The following precautions should be taken to avoid failure of the device:
• Workers and workbenches should be grounded to a common stable
earth at all times when working with laser diodes.
• All equipment, including power supplies, soldering irons, etc. must be
grounded to a common stable earth.
• Power supplies should be well regulated and free of transients.
• Drive circuit connections should be made either by soldering or by high
reliability connectors. Clip leads such as alligator clips are not
recommended. Mechanically unreliable contacts cause transients and
destroy the laser diode.
• Maximum soldering temperature is 250˜ C for a maximum of 5 seconds.
• Drive circuits should include a ‘slow start and stop’ feature to suppress
turn on/turn off transients.
• High quality and high reliability components should be used throughout
the drive circuits.
• It is recommended that the laser diodes be driven by an Automatic
Power Control (APC) circuit, using the built-in monitor photodiode in a
feedback loop to maintain constant optical power output over the full
operating temperature range and throughout the life of the device.
• Always store laser diodes in static-free containers and use a short-
circuit connector.
• Never connect or disconnect any components or external equipment
such as voltmeters, to or from the device circuit while the power is on.
• Avoid touching the glass window. If necessary, clean gently with a
cotton swab dampened with alcohol.
• Leads have to be soldered to their environment without mechanical
stress. Any force during and after mounting must be avoided.
• Mechanical clamping should take place along the cylinder without any
mechanical deformation of the housing (advised maximum force: 20 N).
• Do not look into the operating laser diode through a microscope!

S2011 Chapter 3: System Description
Page 4
Chapter 3 System Description
The S2011 laser Kit is a complete laser diode system, which includes a visible
laser module, DC power supply, and mounting hardware. The S2011 is designed
for experimenters and system designers and includes everything needed to start
experimenting with visible diode lasers. The laser module includes an internal
constant-power driver circuit to regulate the output power to better than 99.5%. A
fixed 2-element glass optic collimates the laser output beam. The module has
been ruggedized to MIL-STD 883C for exceptional ESD protection.
The laser is mounted in a Thorlabs KM100T mount, which provides convenient
mounting and alignment of the laser pointing. Since the KM100T is a kinematic
mount, beam stability is assured.
Included Mounting Hardware
• Mount: KM100T Ø1" Kinematic Mount
• Post: PH3-ST (-EC Version: PH3/M)
• Post Holder: TR3 (-EC Version: TR75/M)
• Base: BA2
• Laser Adapter: AD11F

S2011
Page 5 Rev D, August, 29, 2011
Chapter 4 Setup and Operation
4.1. Setup
1. Unpack Contents
2. Insert Laser Module into Optical Head Mount and tighten setscrew with
a 1/16" hex key or ball driver.
3. Verify line voltage setting on the LDS1 power Supply indicates the
correct operating AC voltage (120 VAC or 240 VAC). Refer to Section
A1 if the voltage selection needs to be changed.
4. Attach the AC line cord to the LDS1 power supply and plug into an AC
outlet.
5. Plug the laser module power cable into the DC cable of the LDS1.
4.2. CW Operation
The S2011 includes everything to operate the laser with a CW output. Follow the
instructions above and, when ready, turn the rocker switch on the LDS1 to the
ON position and the laser will begin operating. The constant power feedback
circuit in the laser module should stabilize the output power to within 0.1%.
4.3. Operating and Handling Precautions
Semiconductor laser diodes in general are easily damaged by overdriving and by
electrical transients. The laser diode is highly susceptible to damage because of
the extremely high optical flux density passing through both facets while in
operation. In case of overdriving or of transients the optical flux density can rise
to unacceptable values, causing catastrophic failure or gradual damage of the
laser diode facets. Current transients should therefore be carefully avoided since
they may destroy the laser or substantially decrease the laser diode lifetime.
Before connecting the laser diode to the supply circuit, make sure that there are
no transients that could make the laser diode output exceed the maximum rating
for radiant flux or forward current.

S2011 Chapter 5: Maintenance and Troubleshooting
Page 6
Chapter 5 Maintenance and Troubleshooting
5.1. Maintenance of the LDS1 Power Supply
5.1.1. Setting the LDS1 AC Line Voltage
The operating AC voltage is indicated by the value shown in the small gray
window located below the AC receptacle. The S2011 systems are shipped with
this set to 120 VAC, the S2011/M Metric versions are shipped with this set to
220 VAC. If this needs to be changed, follow the instructions below:
1. Make sure the LDS1 is turned off and remove the AC line cord.
2. Slide the voltage selector (located underneath the AC input receptacle)
to the appropriate line voltage (115V or 230V), using a small
screwdriver.
3. Verify the correct voltage is shown through the window, if not, repeat the
above steps.
5.1.2. Fuse Replacement
The LDS1 uses a 5 x 20 mm, 500 mA, 250 V, Slo-blo style fuse, which under
normal operation should not have to be replaced. If the fuse is suspected blown,
follow the steps below to replace them.
1. Remove the AC line cord from the LDS1.
2. Using a small screwdriver, pry the voltage selection module out of the
AC receptacle.
3. Remove the fuse and replace only with 5x20mm fuses rated at 500mA /
250V (Slo-blo).
4. Install the voltage selector module.
5. Do not use the S2011 if the unit continues to blow fuses. Contact your
local Technical Support Office for further assistance.
5.2. Troubleshooting
The S2011 is a robust system, which should provide many hours of reliable
service. There are no user-serviceable inside the system. If the unit stops
functioning normally, please call you local Thorlabs’ Technical Support Office and
a technician will be happy to assist you.

S2011
Page 7 Rev D, August, 29, 2011
Chapter 6 Specifications
Laser Module
CPS196 Performance Specifications
Housing Anodized Aluminum
Lens Glass
Laser Type N-Type
Class 3R
Operating Teperature -10 to 40 °C
Storage Temperature -40 to 85 °C
Parameter Sym Min Typ Max unit
Wavelength λ 635 640 nm
Optical Output Power Po 4.5 mW
Beam Divergence
(Including Natural Divergence)1
θ⊥
θ//
0.6
1.8
mrad
Focal range FR 50 ∞ mm
Beam Diameter, Focused
@400 mm (FWHM)
S⊥xS// 75 x 300 μm
Beam Diameter (FWHM)1 S⊥xS// 2.45 x 0.54 mm
Optical-Aaxis Deviation αom 7 15 mrad
Clear Aperture dca 4 mm
Operating Current lop 55 mA
Operating Voltage
(Referenced to Ground)
Vop -4.5 -5 -5.5 V
Power Supply
LDS1 Performance Specifications
Type Linear, DC Output
Input 110 – 120 VAC/220-240VAC, 50 – 60 Hz
Input Receptacle IEC 320 Style
Output 5VDC, 250mA
Output Connector 2.5mm mini phono plug
Power Switch Rocker Style, Green LED On indicator
Fuses (2) 20mm 500mA @ 250V
1When collimated.

S2011 Chapter 7: Mechanical Drawing
Page 8
Chapter 7 Mechanical Drawing
Clear Aperture
Ø4.4 mm
(Ø0.173")
Eliptical Output
Beam Shape
46.0 mm
(1.811")
Ø8.0 mm
(Ø0.315")
1
2
3
Pin Description Alternate Pin Phono Jack
1 -5 V Ground Red/Outer
2 NC NC None
3 Ground +5 V Black/Center
2.54 mm
(0.100")
Ø0.54 mm
(Ø0.021")
Ø10.9 mm
(Ø0.429")
3.0 mm
(0.118")
1
2
3
1.92"
(48.6 mm)
1.97"
(49.9 mm)
1.00"
(25.4 mm)
1.92"
(48.6 mm)
1.97"
(49.9 mm)
1.00"
(25.4 mm)
#8-32 (M4)
Clearance Hole
SM1 (1.035"-40)
Thread
0.40"
(10.7 mm)
Ø1/4 - 80
Adjuster Screws with
Removeable Knobs
1.77"
(44.9 mm)
1.05"
(26.7 mm)
#8-32 (M4) Clearance Holes
2 Places at 90°

S2011
Page 9 Rev D, August, 29, 2011
Chapter 8 Regulatory
As required by the WEEE (Waste Electrical and Electronic Equipment Directive)
of the European Community and the corresponding national laws, Thorlabs offers
all end users in the EC the possibility to return “end of life” units without incurring
disposal charges.
•This offer is valid for Thorlabs electrical and electronic equipment:
•Sold after August 13, 2005
•Marked correspondingly with the crossed out
“wheelie bin” logo (see right)
•Sold to a company or institute within the EC
•Currently owned by a company or institute
within the EC
•Still complete, not disassembled and not
contaminated
As the WEEE directive applies to self contained
operational electrical and electronic products, this end of
life take back service does not refer to other Thorlabs products, such as:
•Pure OEM products, that means assemblies to be built into a unit by the
user (e.g. OEM laser driver cards)
•Components
•Mechanics and optics
•Left over parts of units disassembled by the user (PCB’s, housings etc.).
If you wish to return a Thorlabs unit for waste recovery, please contact Thorlabs
or your nearest dealer for further information.
8.1. Waste Treatment is Your Own Responsibility
If you do not return an “end of life” unit to Thorlabs, you must hand it to a
company specialized in waste recovery. Do not dispose of the unit in a litter bin
or at a public waste disposal site.
8.2. Ecological Background
It is well known that WEEE pollutes the environment by releasing toxic products
during decomposition. The aim of the European RoHS directive is to reduce the
content of toxic substances in electronic products in the future.
The intent of the WEEE directive is to enforce the recycling of WEEE. A
controlled recycling of end of life products will thereby avoid negative impacts on
the environment.
Wheelie Bin Logo

S2011 Chapter 9: Thorlabs Worldwide Contacts
Page 10
USA, Canada, and South America
Thorlabs, Inc.
sal[email protected]
[email protected]
Europe
Thorlabs GmbH
[email protected]
France
Thorlabs SAS
[email protected]
Japan
Thorlabs Japan, Inc
[email protected]
UK and Ireland
Thorlabs Ltd.
[email protected]
[email protected]
Scandinavia
Thorlabs Sweden AB
[email protected]
Brazil
Thorlabs Vendas de Fotônicos Ltda.
[email protected]
China
Thorlabs China
[email protected]
Chapter Thorlabs Worldwide Contacts
For technical support or sales inquiries, please visit us at
www.thorlabs.com/contact for our most up-to-date contact information.

www.thorlabs.com