Essays about: "Spectral Hole Burning Technique"

Showing result 1 - 5 of 7 essays containing the words Spectral Hole Burning Technique.

1. 1. Improving the experimental setup for ultrasound-optical tomography imaging

   University essay from Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

   Author : Ibtisam Dahir Ahmed; [2023]
   Keywords : Ultrasound-optical tomography UOT ; thulium-doped lithium niobate;

   Abstract : According to Bröstcancer förbundet, mammography is not efficient at detecting tumors in dense breast tissue or diagnosing breast cancer at its early stages. Ultrasound-optical tomography (UOT) is an imaging technique in development and has the potential for deep-tissue imaging. READ MORE

3. 2. Developing a technique for combining light and ultrasound for deep tissue imaging

   University essay from Lunds universitet/Atomfysik; Lunds universitet/Fysiska institutionen

   Author : Meng Li; [2018]
   Keywords : UOT; Ultrasound Optical Tomography; Monte Carlo; TCSPC; PTOF; Photon time of flight; Ultrasound; US; AOT; Acousto-optical tomography; Spectral hole burning; SHB; ultrasound modulation; Physics and Astronomy;

   Abstract : Biological tissues are strongly light-scattering and absorbing media that limit the depth of optical-based imaging. Even though, optical imaging provides good optical contrast information of biological content that is beneficial for clinical diagnostics application. READ MORE

4. 3. Preparation of Materials for Deep Tissue Imaging with Slow Light

   University essay from Lunds universitet/Atomfysik; Lunds universitet/Fysiska institutionen

   Author : Mengqiao di; [2018]
   Keywords : Ultrasound Optical Tomography; Deep Tissue Imaging; Monte Carlo Simulation; Spectral Hole Burning; Physics and Astronomy;

   Abstract : Ultrasound Optical Tomography (UOT) is a proposed technique, which combines ultrasound imaging and optical imaging in a new way to detect, e.g. READ MORE

5. 4. Investigation of phase conjugation for medical imaging

   University essay from Lunds universitet/Fysiska institutionen; Lunds universitet/Atomfysik

   Author : Ivan Sytcevich; [2017]
   Keywords : Phase conjugation; Ultrasound Optical Tomography; Rare-Earth-Doped Crystals.; Physics and Astronomy;

   Abstract : With the development of extremely precise spectral filters based on spectral hole burning and slow light effects, the idea of their implementation in an Ultrasound Optical Tomography (UOT) medical imaging technique arose. Simulations have shown that the resulting Contrast-to-Noise (CNR) ratio is fairly good at depths up to 5 cm but decreases dramatically when probing deeper in tissue. READ MORE

6. 5. Development of a Tunable Frequency Shift Filter Using a Praseodymium Doped Y2SiO5-Crystal

   University essay from Lunds universitet/Fysiska institutionen

   Author : Yupan Bao; [2016]
   Keywords : Ultrasound Optical Tomography UOT ; Off-resonant Slow Light; Filter; Frequency Shifter; Spectral Hole Burning Technique; Rare-earth-ion-doped Crystal; Physics and Astronomy;

   Abstract : In this thesis, a tunable frequency shift filter (FSF) with a 1 ~ 2 MHz passband created in a praseodymium doped Y2SiO5-crystal using a special hole burning technique is developed and tested. The FSF is able to shift the frequency of its passband and the light passing through the passband by applying an external electric field, where the frequency shift is proportional to the applied field. READ MORE