Optical properties of highly scattering media determined from changes in attenuation, phase, and modulation depth

M Kohl, R Watson, M Cope - Applied optics, 1997 - opg.optica.org
… The optical properties of scattering media determine the attenuation (A) and … modulation
depth (M) of an intensity-modulated lightwave. Our primary finding is that the ratio of changes in …

Modulation masking: Effects of modulation frequency, depth, and phase

SP Bacon, DW Grantham - The Journal of the Acoustical Society of …, 1989 - pubs.aip.org
… broadband background noise with a modulation depth (mm ) of … going zero crossing, was
filtered, attenuated, and added to adc … considerably with changes in the depth of the modulated

Optical properties of highly scattering media determined from the ratio of changes in attenuation, phase, and modulation depth

M Kohl-Bareis, RW Watson… - Optical Tomography and …, 1997 - spiedigitallibrary.org
… Alternatively, single distance, multiple modulation frequency … small changes in the absorption
coefficient induce changes … ) and modulation depth, and that the ratio of these changes is …

The determination of the effective attenuation coefficient from effective organ depth and modulation transfer function in gamma camera imaging

SÅ Starck, S Carlsson - Physics in Medicine & Biology, 1997 - iopscience.iop.org
… For 111In, the attenuation coefficient decreased with the depth of an organ due to the use
of … and a corresponding change in mean photon energy by depth. For 201Tl, the attenuation

Modulation of Seismic Attenuation at Parkfield, Before and After the 2004 M6 Earthquake

L Malagnini, DS Dreger, R Bürgmann… - Journal of …, 2019 - Wiley Online Library
… After about four years from the main shock we observe changes is seismic attenuation,
with the same sign on both sides of the fault. The fact that late postseismic periods show …

Layer-based, depth-resolved computation of attenuation coefficients and backscattering fractions in tissue using optical coherence tomography

TM Cannon, BE Bouma… - Biomedical Optics …, 2021 - opg.optica.org
… method for depth-resolved attenuation coefficient computation that … change in attenuation
coefficient within a region of consistent backscattering fraction would be indicative of a change

Optoacoustic determination of optical attenuation depth using interferometric detection

BP Payne, V Venugopalan, BB Mikic… - Journal of biomedical …, 2003 - spiedigitallibrary.org
… This would simplify alignment, increase modulation depth, … changes in the optical properties
of the phantom. Although these effects resulted in a small change in the attenuation depth of …

Numerical study on the minimum modulation depth of a saturable absorber for stable fiber laser mode locking

J Jeon, J Lee, JH Lee - Journal of the Optical Society of America B, 2014 - opg.optica.org
… the modulation depth range of 1.5%–39.5%. First, we analyzed the minimum modulation
depth … (a) Change in the temporal shape of the output pulses calculated with an increase in the …

Frequency modulated pulse for ultrasonic imaging in an attenuating medium

N Rao - [1990] Proceedings. Third Annual IEEE Symposium on …, 1990 - ieeexplore.ieee.org
… As expected, for 1 cm depth, the time-bandwidth product is close to 16, the Value we expect
for non attenuating case. This is because the change in the spectrum of the reflected FM …

[HTML][HTML] Effect of scattering and differential attenuation on beam profile in the presence of high-density intensity modifying compensator

S Kaushik, R Punia, A Tyagi… - Journal of Cancer …, 2019 - journals.lww.com
… Hence, disregarding the change in beam flatness due to differential attenuationattenuation
due to high-density intensity-modulating compensator alloy. To see the impact of attenuation