Deep Learning Enabled Laser Speckle Wavemeter with a High Dynamic Range
نویسندگان
چکیده
منابع مشابه
High-accuracy wavemeter based on a stabilized diode laser
We have built a high-accuracy wavelength meter for tunable lasers using a scanning Michelson interferometer and a reference laser of known wavelength. The reference laser is a frequency stabilized diode laser locked to an atomic transition in Rb. The wavemeter has a statistical error per measurement of 5 parts in 10 which can be reduced considerably by averaging. Using a second stabilized diode...
متن کاملHarnessing speckle for a sub-femtometre resolved broadband wavemeter and laser stabilization
The accurate determination and control of the wavelength of light is fundamental to many fields of science. Speckle patterns resulting from the interference of multiple reflections in disordered media are well-known to scramble the information content of light by complex but linear processes. However, these patterns are, in fact, exceptionally rich in information about the illuminating source. ...
متن کاملSpeckle noise reduction techniques for high-dynamic range imaging
High-dynamic range imaging from space in the visible, aiming in particular at the detection of terrestrial exoplanets, necessitates not only the use of a coronagraph, but also of adaptive optics to correct optical defects in real time. Indeed, these defects scatter light and give birth to speckles in the image plane. Speckles can be cancelled by driving a deformable mirror to measure and compen...
متن کاملDeep Chain HDRI: Reconstructing a High Dynamic Range Image from a Single Low Dynamic Range Image
In this paper, we propose a novel deep neural network model that reconstructs a high dynamic range (HDR) image from a single low dynamic range (LDR) image. The proposed model is based on a convolutional neural network composed of dilated convolutional layers, and infers LDR images with various exposures and illumination from a single LDR image of the same scene. Then, the final HDR image can be...
متن کاملSpeckle Decorrelation and Dynamic Range in Speckle Noise Limited Imaging
The useful dynamic range of an image in the diffraction limited regime is usually limited by speckles caused by residual phase errors in the optical system forming the image. The technique of speckle decorrelation involves introducing many independent realizations of additional phase error into a wavefront during one speckle lifetime, changing the instantaneous speckle pattern. A commonly held ...
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: Laser & Photonics Reviews
سال: 2020
ISSN: 1863-8880,1863-8899
DOI: 10.1002/lpor.202000120