Optimization of focusing through scattering media using the continuous sequential algorithm
نویسندگان
چکیده
منابع مشابه
Focusing through dynamic scattering media.
We demonstrate steady-state focusing of coherent light through dynamic scattering media. The phase of an incident beam is controlled both spatially and temporally using a reflective, 1020-segment MEMS spatial light modulator, using a coordinate descent optimization technique. We achieve focal intensity enhancement of between 5 and 400 for dynamic media with speckle decorrelation time constants ...
متن کاملBINARY WAVEFRONT OPTIMIZATION FOR FOCUSING LIGHT THROUGH SCATTERING MEDIA by
SCATTERING MEDIA by XIAOLONG ZHANG (Under the Direction of Peter Kner) ABSTRACT Random light scattering in inhomogeneous media causes strong wavefront aberrations and makes it impossible to focus light. Many wavefront correction techniques have been recently demonstrated to control light propagation in these media. Phase modulation with a spatial light modulator (SLM) and digital light modulato...
متن کاملFocusing polychromatic light through strongly scattering media.
We demonstrate feedback-optimized focusing of spatially coherent polychromatic light after transmission through strongly scattering media, and describe the relationship between optimized focus intensity and initial far-field speckle contrast. Optimization is performed using a MEMS spatial light modulator with camera-based or spectrometer-based feedback. We observe that the spectral bandwidth of...
متن کاملFocusing polychromatic light through scattering media
We demonstrate enhanced focusing of polychromatic light through strongly scattering media. The experimental results validate a theoretical relationship among source bandwidth, sample bandwidth, and initial contrast of a far-field speckle. For various combinations of source bandwidth and sample bandwidth, we optimize far-field focal intensity enhancement using a MEMS spatial light modulator to m...
متن کاملThree-dimensional focusing through scattering media using conjugate adaptive optics with remote focusing (CAORF).
The small correction volume for conventional wavefront shaping methods limits their application in biological imaging through scattering media. We demonstrate large volume wavefront shaping through a scattering layer with a single correction by conjugate adaptive optics and remote focusing (CAORF). The remote focusing module can maintain the conjugation between the adaptive optical (AO) element...
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: Journal of Modern Optics
سال: 2015
ISSN: 0950-0340,1362-3044
DOI: 10.1080/09500340.2015.1073804