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Troubleshooting
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Summary of Contents for THORLABS HRS015
- Page 1 HRS015 Stabilized Red HeNe Laser User Guide...
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Page 2: Table Of Contents
8.2. Application Troubleshooting ..................18 8.2.1. Noise, Oscillations, and Fluctuation Sources..............18 Chapter 9 Specifications ..................... 19 Chapter 10 Mechanical Drawing ................... 20 Chapter 11 Regulatory ......................21 Chapter 12 CE Certificate of Compliance ................22 Chapter 13 Thorlabs Worldwide Contacts ................23... -
Page 3: Chapter 1 Warning Symbol Definitions
Stabilized HeNe Laser Chapter 1: Warning Symbol Definitions Warning Symbol Definitions Chapter 1 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... -
Page 4: Chapter 2 Safety
Stabilized HeNe Laser Chapter 2: Safety Safety Chapter 2 WARNING Laser Radiation – Avoid Exposure to Beam – Class 3R Laser Product The laser described in this operating manual emits visible light. This laser is safe to operate provided that the user complies with all safety warnings. -
Page 5: Ce Compliance
For European customers who require a CE-approved laser system, Thorlabs certifies that our laser heads and lab power supplies meet the appropriate CE requirements. In order for the CE regulations to be met, all Thorlabs power supplies must be used with an input line cord with a length of less than three meters. The factory-included line cord has a length of approximately two meters. -
Page 6: Chapter 3 Description
Description Chapter 3 Thorlabs offers an extensive selection of CE compliant 632.991 nm (red) Helium Neon (HeNe) Lasers with powers from 0.5 mW to 35 mW. HeNe lasers are widely chosen for use in educational applications and as alignment tools due to their excellent beam quality and gas discharge laser characteristics. In addition to these standard lasers, Thorlabs now offers a stabilized HeNe where you can choose between frequency and intensity stabilization. -
Page 7: Frequency Stabilization Mode
Stabilized HeNe Laser Chapter 3: Description 3.2.1. Frequency Stabilization Mode The frequency stabilization mode will balance the intensity of the two modes under the gain curve in order to keep the frequency of the laser stable. The tube length is specifically chosen to allow only two cavity modes to oscillate under these conditions. -
Page 8: Hene Laser Overview
HeNe lasers tend to be small, with cavity lengths of around 10 cm up to 1 m and optical output powers ranging from 0.5 mW to 50 mW. Thorlabs offers output powers up to 35 mW. Typical HeNe Parameters Beam Diameter (D) - Page 9 Stabilized HeNe Laser Chapter 3: Description Figure 4 HeNe Gain Curve Showing Cavity Modes The laser process in a HeNe laser starts with the collision of electrons from the electrical discharge with the helium atoms in the gas. This excites helium from the ground state to a long-lived, metastable excited state. Collision of excited helium atoms with ground-state neon atoms results in excited neon electrons.
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Page 10: Hene Polarization
Stabilized HeNe Laser Chapter 3: Description (604.613 nm), and an orange (611.802 nm) transition. The typical red, 633 nm wavelength output of a HeNe laser actually has a much lower gain compared to other wavelengths, such as the 1.15 μm and 3.39 μm lines. Figure 6 HeNe Visible Laser Lines 3.6. -
Page 11: Chapter 4 Unpacking
Inspect the packing container for any damage that may have occurred during shipment. Contact your local Thorlabs customer service office for assistance. Packing materials are specifically designed to protect against shipping damage. Please keep this container and reuse if your system needs to be returned to Thorlabs for service or evaluation. -
Page 12: Chapter 5 Setup
Even low amplitude reflections from an uncoated (or even coated) optical surface may cause problems. For applications where this cannot be avoided, Thorlabs recommends using an optical isolator (Thorlabs IO-2D-633-VLP) at the output of the laser. -
Page 13: Chapter 6 Operation
Stabilized HeNe Laser Chapter 6: Operation Operation Chapter 6 To operate the laser system, follow the following procedures. 1) Make sure the laser is pointing safely away from people and is securely mounted. 2) Turn the key switch on the power supply to “ON.” The “Laser On” LED indicator will light. NOTE: There is a 3 to 5 second CDRH safety delay before the voltage turns on. -
Page 14: Fuse Replacement
Fuse Replacement Your HRS015 Stabilized HeNe has been shipped from Thorlabs configured for 100 – 240 VAC, 50 – 60 Hz operation. There is no line switch adjustment to be made. However, it may be necessary to replace an open fuse. - Page 15 Stabilized HeNe Laser Chapter 6: Operation Status LED If the LED is off, the laser MAY NOT be on. If Low-Voltage Supply Connector the LED is blinking, the laser is warming up, for Stabilization Circuits and if the LED is solid, the laser is stabilized. High Voltage Alden 2 Position Key Switch Connector...
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Page 16: Chapter 7 General Maintenance
Aside from the AC input fuse, there are no user-serviceable parts in this product. If you suspect something has failed on the unit and the Steps in Chapter 7: Troubleshooting do not solve the problem, please contact Thorlabs for advice on returning the unit for evaluation. Always follow safe operating procedures as described in Chapter 1: Safety. -
Page 17: Chapter 8 Troubleshooting
Stabilized HeNe Laser Chapter 8: Troubleshooting Troubleshooting Chapter 8 8.1. Technical Failures Problem No light being emanating from Make sure that the aperture is open. the laser Check to make sure: the laser is plugged into a working outlet, ... -
Page 18: Application Troubleshooting
Stabilized HeNe Laser Chapter 8: Troubleshooting 8.2. Application Troubleshooting Some sources of trouble for a HeNe laser do not come from the laser failing or not meeting its specifications. Instead, these lasers may not be suited for the application. Environment is an important consideration as well. Dirty environments can cause the optics to become contaminated and the power output to drop below expected levels. -
Page 19: Chapter 9 Specifications
Stabilized HeNe Laser Chapter 9: Specifications Specifications Chapter 9 Item # HRS015 Wavelength 632.991 nm Long Term Beam Drift <0.05 mrad 94 KΩ Series Resistors in Housing Operating Current 5.0 mA Shock 15 g for 11 msec Weight 600 g... -
Page 20: Chapter 10 Mechanical Drawing
Stabilized HeNe Laser Chapter 10: Mechanical Drawing Mechanical Drawing Chapter 10 Figure 12 Dimensional Drawing 21074-D02 Rev H, August 27, 2015 Page 20... -
Page 21: Chapter 11 Regulatory
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. -
Page 22: Chapter 12 Ce Certificate Of Compliance
Stabilized HeNe Laser Chapter 12: CE Certificate of Compliance CE Certificate of Compliance Chapter 12 21074-D02 Rev H, August 27, 2015 Page 22... -
Page 23: Chapter 13 Thorlabs Worldwide Contacts
Stabilized HeNe Laser Chapter 13: Thorlabs Worldwide Contacts Thorlabs Worldwide Contacts Chapter 13 For technical support or sales inquiries, please visit us at www.thorlabs.com/contact for our most up-to- date contact information. USA, Canada, and South America UK and Ireland Thorlabs, Inc. - Page 24 www.thorlabs.com...
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