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Summary of Contents for THORLABS HRS015B
- Page 1 HRS015B Stabilized Red HeNe Laser User Guide...
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Page 3: Table Of Contents
8.2. Application Troubleshooting ..................17 8.2.1. Noise, Oscillations, and Fluctuation Sources..............17 Chapter 9 Specifications ..................... 18 Chapter 10 Mechanical Drawing ................... 19 Chapter 11 Regulatory ......................20 Chapter 12 Thorlabs Worldwide Contacts ................21 Rev F, July 15, 2022 Page 1... -
Page 4: 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 5: Chapter 2 Safety
WARNING Safety glasses with an optical density (OD) of 2.4 or greater are required while operating this product. Safety glasses can be purchased from Thorlabs at www.thorlabs.com. For assistance in choosing the proper safety glasses, please contact Thorlabs Technical Support. -
Page 6: 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 7: Chapter 3 Description
This laser also comes with a 3.5 ft. long high-voltage cable to connect with the included power supply. This particular laser head is designed to operate at an optimum performance level when used with the required Thorlabs power supply. -
Page 8: 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 9: 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 10 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 11: Hene Polarization
Stabilized HeNe Laser Chapter 3: Description Figure 6 HeNe Visible Laser Lines 3.6. HeNe Polarization 3.6.1. Random Polarized Beam Most common HeNe laser tubes are randomly polarized since for many applications the polarization of the beam does not matter. The term "random" here really does not mean that the polarization is changing to totally arbitrary orientations or at high frequency. -
Page 12: 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 13: 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 (Item # IO-2D-633-VLP) at the output of the laser. -
Page 14: 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 15: 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 16 Stabilized HeNe Laser Chapter 6: Operation Status LED Low-Voltage Supply Connector If the LED is off, the laser MAY NOT be on. If for Stabilization Circuits High Voltage Alden the LED is blinking, the laser is warming up, Connector and if the LED is solid, the laser is stabilized. Laser On LED LED only indicates the power 2 Position...
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Page 17: 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 8 do not solve the problem, please contact Thorlabs for advice on returning the unit for evaluation. -
Page 18: Chapter 8 Troubleshooting
Stabilized HeNe Laser Chapter 8: Troubleshooting Troubleshooting Chapter 8 8.1. Technical Failures Case No Light Emanating from the Make sure that the aperture is open. Laser Check to make sure: • the laser is plugged into a working outlet, • the power cord is fully seated into the power supply, •... -
Page 19: 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 20: Chapter 9 Specifications
Stabilized HeNe Laser Chapter 9: Specifications Specifications Chapter 9 Item # HRS015B Wavelength 632.992 nm Series Resistors in Housing 66 kΩ Operating Current 5.0 mA Weight 600 g CDRH/CE Classification IIIa/3R (HRR005 is IIa/2) Un-stabilized Power 1.2 mW min, 2.7 mW max Stabilized Power >1.2 mW... -
Page 21: Chapter 10 Mechanical Drawing
Stabilized HeNe Laser Chapter 10: Mechanical Drawing Mechanical Drawing Chapter 10 Figure 12 Dimensional Drawing Rev F, July 15, 2022 Page 19... -
Page 22: 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 23: Chapter 12 Thorlabs Worldwide Contacts
Stabilized HeNe Laser Chapter 12: Thorlabs Worldwide Contacts Thorlabs Worldwide Contacts Chapter 12 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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