Thorlabs.com - Noise Eaters / Laser Amplitude Stabilizers
https://www.thorlabs.com/newgrouppage9_pf.cfm?guide=10&category_id=95&objectgroup_id=6107[7/7/2016 8:29:39 AM]
N O I S E E A T E R S / L A S E R A M P L I T U D E S T A B I L I Z E R S
Noise Attenuation Factor is the Ratio of Noise
Amplitude Before and After the Noise Eater
LCC3113H Top View Showing Power Range
Adjustment Switches and Modulation Input
Features
Reduces Laser Intensity Noise
Also Functions as a Variable Attenuator or EO Modulator
Models for use at 425 - 650 nm, 475 - 650 nm, 650 - 1050 nm, or 1050 - 1620 nm
Maximum Input Power of up to 1 W, Depending on Model, Wavelength, and Beam Size
(See the
Operation
Tab for Details)
Excellent for Sensitive Experiments such as Optical Tweezers
Ideal for Stabilizing CW Pump Lasers
Thorlabs' Liquid Crystal Noise Eaters / Laser Amplitude Stabilizers are precision instruments for
stabilizing, modulating, and attenuating the power of linearly polarized light. These closed-loop systems are
designed for use with light in the 425 - 650 nm (LCC3111L), 475 - 650 nm (LCC3111H), 650 - 1050 nm
(LCC3112H), or 1050 - 1620 nm (LCC3113H) wavelength range. We offer noise eater models for low
(<100 mW) or high (<1 W) power use, all with external modulation inputs. See the
Specs
tab for details.
Noise Reduction
Utilizing a liquid crystal amplitude modulator, combined with a photodiode for power measurement and a
feedback control circuit, the noise eaters can eliminate intensity noise in linearly polarized light, achieving
amplitude stabilization of within 0.05% of a selected output power. The input power can be set to one of
several ranges using the switch(es) on the top of the unit. The potentiometer is then adjusted to select the
output power (see the
Operation
tab for more information). Long-term performance and frequency characterization for each noise eater model are shown on
the
Performance
tab.
O V E R V I E W
Laser Amplitude Stabilizer / Variable Attenuator
Models with Wavelength Ranges Covering 425 - 1620 nm Available
Closed-Loop Feedback System
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LCC3111H
Front
Back
LCC3111H
Noise Eater with
Half-Wave Plate in
CRM1 Rotation Mount
Application Idea
LCC3111H - July 7, 2016
Item # LCC3111H was discontinued on July 7, 2016. For informational purposes, this is a copy of the
website content at that time and is valid only for the stated product.