Thermal noises and noise compensation in high-reflection multilayer coating
نویسندگان
چکیده
منابع مشابه
Brownian thermal noise in multilayer coated mirrors
We analyze the Brownian thermal noise of a multilayer dielectric coating used in high-precision optical measurements, including interferometric gravitational-wave detectors. We assume the coating material to be isotropic, and therefore study thermal noises arising from shear and bulk losses of the coating materials. We show that coating noise arises not only from layer thickness fluctuations, b...
متن کاملSoap-film coating: High-speed deposition of multilayer nanofilms
The coating of thin films is applied in numerous fields and many methods are employed for the deposition of these films. Some coating techniques may deposit films at high speed; for example, ordinary printing paper is coated with micrometre-thick layers of clay at a speed of tens of meters per second. However, to coat nanometre thin films at high speed, vacuum techniques are typically required,...
متن کاملCoating thermal noise of a finite-size cylindrical mirror
Advancement in the reduction of technical noise and isolation of seismic vibration has let a high-precision measurement device like the interferometric gravitational-wave detectors [1] be so sensitive that tiny thermal fluctuation of the measurement surface can limit the sensitivity. It is important to develop a method to estimate the thermalnoise level as accurately as possible. Our study with...
متن کاملModel compensation for noises in training and test data
It is well known that the performances of speech recognition systems degrade rapidly as the mismatch between the training and test conditions increases. Approaches to compensate for this mismatch generally assume that the training data is noise-free, and the test data is noisy. In practice, this assumption is seldom correct. In this paper, we propose an iterative technique to compensate for noi...
متن کاملGhosting Reflection Compensation for Multispectral High Dynamic Range Imaging
A compact overall design of a multispectral camera can be achieved by placing the bandpass filters between the lens and sensor. However, internal reflections between the sensor (or IR cut filter) and the optical filters may lead to weak duplicate images which impair the image quality. The duplicates called ghosting are especially noticeable near bright image regions and interfere with the surro...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physics Letters A
سال: 2008
ISSN: 0375-9601
DOI: 10.1016/j.physleta.2008.09.056