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Summary of Contents for THORLABS LCC3111H
- Page 1 Liquid Crystal Noise Eaters User Guide...
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Page 2: Table Of Contents
Mechanical Drawing ............15 Chapter 8 Maintenance ..............16 8.1. Troubleshooting ............ 16 Chapter 9 Regulatory ............... 17 9.1. Waste Treatment is Your Own Responsibility .... 17 9.2. Ecological Background .......... 17 Chapter 10 Thorlabs Worldwide Contacts........18 Page 1 Rev C, Dec 8, 2015... -
Page 3: Chapter 1 Warning Symbol Definitions
Liquid Crystal Noise Eater Chapter 1: Warning Symbol Definitions 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... -
Page 4: Chapter 2 Safety
Liquid Crystal Noise Eater Chapter 2 Safety Do Not Open Housing! The Noise Eater has no user-serviceable parts. Service should only be performed by trained service personnel. All statements regarding safety of operation and technical data in this instruction manual will only apply when the unit is operated correctly. WARNING Laser Radiation –... -
Page 5: Chapter 3 Product Overview
Chapter 3: Product Overview Chapter 3 Product Overview Thorlabs’ Liquid Crystal Noise Eaters are precision instruments for stabilizing and attenuating laser power. The noise eater consists of a variable attenuator (liquid crystal wave plate and polarizer), a calibrated beam splitter, and a servo controller to control the modulator, as depicted in the block diagram below. -
Page 6: Chapter 4 Setup
Figure 2 CRM1 Cage Rotation Mount holding a Mounted Half-Wave Plate (such as the WPH10M-633), secured to the LCC3111H Noise Eater with ER Cage Rods For post mounting, the noise eater is equipped with two 8-32 (M4) threaded holes. -
Page 7: Power Supply
Liquid Crystal Noise Eater Chapter 4: Setup Figure 3 Horizontally and Vertically Mounted LCC3111H Noise Eaters. Note the direction of the input polarization indicated by the double arrow. 4.2. Power Supply The noise eater operates with 12 V DC power. We recommend using the AC/DC power supply that is included with the noise eater for best performance. -
Page 8: Chapter 5 Operation
“HIGH”, the input power range can be set from 100 mW to 500. The LCC3111H and LCC3111L have only one selection switch which can set the input power range from 1 mW to 30 mW or 100 mW to 500 mW. - Page 9 For the high power noise eaters (LCC3111H, LCC3112H, and LCC3113H), this damage threshold is 8 W/cm which corresponds to a maximum input power of 1 W if the input power is distributed evenly across the Ø4 mm clear aperture.
- Page 10 Liquid Crystal Noise Eater LCC3111H Max Input Power at Various Wavelengths Switch Power Level Power Level Power Level Status at 450 nm at 550 nm at 635 nm 100 mW 200 mW 150 mW 100 mW 300 mW 600 mW...
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Page 11: Modulate The Output Power
Liquid Crystal Noise Eater Chapter 5: Operation 5.3. Modulate the Output Power There is a SMC interface at the right side of the noise eater, which can be used to modulate the attenuation of the noise eater. The modulation input has a 10 k input impedance. -
Page 12: Maximizing The Output Power Using An External Measurement Device
To set the target output to a point that attenuates all noise, but does not unnecessarily attenuate the signal’s power, first observe the characteristics of the noise of the signal, either by using the statistics screen on the Thorlabs’ PM200 optical power meter, or using a detector and an oscilloscope. Once the minimum power level of the noisy signal is established, adjust the output power of the noise eater to an output level slightly below the minimum of the noisy signal. -
Page 13: Maximizing The Output Power Using The Indicator Led
Liquid Crystal Noise Eater Chapter 5: Operation 3. Set the power selector to the suitable value (see Section 5.1). 4. Turn the adjustment knob clockwise until the power reaches 5% below the minimum power you recorded earlier. If you cannot reach the desired power, set the power level to a lower range. -
Page 14: Chapter 6 Specifications
Liquid Crystal Noise Eater Chapter 6 Specifications Item # LCC3111L LCC3111H LCC3112H LCC3113H Operating Wavelength 425 – 650 nm 475 – 650 nm 650 – 1050 nm 1050 – 1620 nm Range Output Power 0.05% (Standard Deviation) Stability Noise Attenuation DC-1.8 kHz... - Page 15 Tested at 100 mW input power with a noise amplitude of 5% of the input signal. See detailed noise attenuation plots at thorlabs.com for more information Max Input Power and Laser Damage Threshold are wavelength- independent. Additionally, the absolute maximum input power varies with wavelength.
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Page 16: Chapter 7 Mechanical Drawing
Liquid Crystal Noise Eater Chapter 7 Mechanical Drawing All noise eater models have an identical case and physical dimensions. The LCC3111L/M, LCC3111H/M, LCC3112H/M, and LCC3113H/M have M4 tapped holes instead of 8-32 tapped holes. Page 15 Rev C, Dec 8, 2015... -
Page 17: Chapter 8 Maintenance
There are no serviceable parts in the noise eater and no reason to open the unit. If you suspect a problem with your noise eater, please call Thorlabs and a member of our Technical Support team will be happy to assist you. -
Page 18: Chapter 9 Regulatory
9.1. 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. -
Page 19: Chapter 10 Thorlabs Worldwide Contacts
Liquid Crystal Noise Eater Chapter 10: Thorlabs Worldwide Contacts Chapter 10 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. USA, Canada, and South America UK and Ireland Thorlabs, Inc. Thorlabs Ltd. - Page 21 CERTIFICATE OF COMPLIANCE According to EMC 2004/108/EC & LVD 2006/95/EC Applicant Name Thorlabs Optical Electronic Technology(Shanghai) Co.,Ltd Address Room A101, No.100, Lane 2891, South Qilianshan Rd., Shanghai Product Description Liquid Crystal Noise Eater Model Numbers LCC3111L, LCC3111L/M, LCC3111H, LCC3111H/M, LCC3112H, LCC3112H/M, LCC3113H, LCC3113H/M,...
- Page 22 www.thorlabs.com...
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