Thursday, February 25th, 10 am (PST) via Zoom Meeting ID: 854 2977 2482 Passcode: 230903 Both human vision and imaging systems have limited capability to separate spatial features, and this information can only be extracted from a limited range in depth. These limitations arise from diffraction, i.e., the finite dimensions of the imaging optics and the geometry of the sensor. In this talk, I will present novel photonic approaches to exceed the resolution limitations of geometric optics. I will show how those concepts can be adapted to micro endoscopy as well as to microscopy-related configurations, including ophthalmic devices for correcting visual deficiencies.
Friday, January 29th, 10 am (PST) Infrared detectors and imaging systems are becoming increasingly important in a diverse range of astronomic, military, and civilian applications. This field has gained significant attention while incorporating various materials and architectures into detector designs with a strong focus on applicability into clinical domains. Dr. Perera will discuss recent detector structures, and his latest work on disease detection. Biomedical applications of infrared include an exploration of an Affordable, Sensitive, Specific, User-friendly, Rapid, Equipment-free, and Deliverable (ASSURED) diagnostic regimen and testing its clinical feasibility for inflammatory bowel diseases (IBDs) and cancer screening. A study using Fourier transform infrared (FTIR) spectroscopy in attenuated total reflectance (ATR) sampling mode analyzed body fluids in order to identify reproducible, stable, and statistically significant differences in spectral signatures of the IR absorbance spectra between the control and disease samples. These results show that serum samples can be used to detect the biochemical changes induced by these diseases.
1:00 PM Friday, January 22nd |
Yahya Mohtashami Schuller group ECE Dept, UCSB | In this talk, we show that we can increase the light extraction efficiency of, impart directionality upon, collimate, and focus the spontaneous emission from InGaN/GaN quantum wells, using phased-array metasurfaces. |
Strong THz laser fields can explore non-linear, non-equilibrium phenomena in matter. The talk will focus on photons emitted by electron/hole re-collisions, and how the polarization of these photons carries information about the semiconductor. |
Mailing List
Supported By
Archives
May 2024
April 2024
March 2024
February 2024
January 2024
October 2023
August 2023
July 2023
June 2023
April 2023
March 2023
February 2023
January 2023
October 2022
September 2022
July 2022
June 2022
May 2022
April 2022
March 2022
February 2022
November 2021
October 2021
September 2021
July 2021
May 2021
April 2021
March 2021
January 2021
December 2020
October 2020
August 2020
May 2020
April 2020
February 2020
January 2020
December 2019
November 2019
October 2019
September 2019
July 2019
June 2019
May 2019
April 2019
February 2019
January 2019
December 2018
November 2018
October 2018
June 2018
February 2018
January 2018
October 2017
July 2017
June 2017
March 2017
February 2017
October 2016
September 2016
July 2016
April 2016
February 2016
January 2016
October 2015
September 2015
August 2015
July 2015
May 2015
January 2015
October 2014
September 2014
July 2014
May 2014
April 2014
March 2014
September 2013
July 2013
March 2013
February 2013
October 2012
Categories
All
Alumni Lectures
Industry Perspective Lectures
IPS Distinguished Lectures
Lectures
OSA Lectures
Outreach Events
Past Events
Social Events
Student Lecture Series