The Spotlight Report

Kashmira Nakhoda on The Journey from Large Optics Metrology to X-Ray Synchrotron Application Design and Metrology

Dr. Kashmira Nakhoda sat down to discuss her journey through optics. Kashmira shared her early work on metrology and scattering modeling of the DKIST 4.2 m primary mirror and how she progressed to X-Ray synchotron application metrology and design. She also explored what makes a lab group, or any group, great to be a part of, how to continue learning, and how she has arrived at her current position of having a consulting business, RayKi Consulting. This was a really great discussion, and Kashmira shared not only her incredible optics knowledge, but also her valuable perspective on a career in optics. I hope you enjoy as much as I did. References: 1. DKIST Fabrication and Metrology: http://www.loft.optics.arizona.edu/documents/journal_articles/DKIST_SPIE_2016_CJO.pdf2) [http://www.loft.optics.arizona.edu/documents/journal_articles/DKIST_SPIE_2016_CJO.pdf2)] 2. PSD from Smooth Surfaces: https://www.spiedigitallibrary.org/conference-proceedings-of-spie/8838/883805/Use-of-the-surface-PSD-and-incident-angle-adjustments-to/10.1117/12.2024612.short [https://www.spiedigitallibrary.org/conference-proceedings-of-spie/8838/883805/Use-of-the-surface-PSD-and-incident-angle-adjustments-to/10.1117/12.2024612.short] 3. PSF Wikipedia: https://en.wikipedia.org/wiki/Point_spread_function [https://en.wikipedia.org/wiki/Point_spread_function] 4. Instantaneous Sagnac Interferometer: https://www.sciencedirect.com/science/article/abs/pii/S0030399222003255?via%3Dihub [https://www.sciencedirect.com/science/article/abs/pii/S0030399222003255?via%3Dihub] 5. Coded Aperture for X-Ray Fluorescence Full Field Imaging: https://onlinelibrary.wiley.com/iucr/doi/10.1107/S1600577520012308 [https://onlinelibrary.wiley.com/iucr/doi/10.1107/S1600577520012308] 6. Jonathan Livingston Seagull: https://www.amazon.com/Jonathan-Livingston-Seagull-Richard-Bach/dp/147679331X [https://www.amazon.com/Jonathan-Livingston-Seagull-Richard-Bach/dp/147679331X] 7. 2D PSF Prediction for Multiple Reflections: https://www.spiedigitallibrary.org/conference-proceedings-of-spie/9961/1/Two-dimensional-PSF-prediction-of-multiple-reflection-optical-systems-with/10.1117/12.2235410.short#_=_ [https://www.spiedigitallibrary.org/conference-proceedings-of-spie/9961/1/Two-dimensional-PSF-prediction-of-multiple-reflection-optical-systems-with/10.1117/12.2235410.short#_=_] 8. Novel Methods in PSF Prediction (Dissertation): https://www.politesi.polimi.it/handle/10589/133575?locale=it [https://www.politesi.polimi.it/handle/10589/133575?locale=it]

Travis Sawyer on Early Cancer Detection with Multimodal Optical Imaging

Dr. Travis Sawyer, Professor of Optical Sciences, Biomedical Engineering, Electrical and Computer Engineering, Health Sciences, and Medicine, was kind enough to speak with me about how multimodal optical imaging can improve early cancer diagnosis in ovarian and esophageal cancers. Travis discusses existing diagnostic methods, the need for improved techniques and why OCT, two-photon imaging, and fluorescence hold potential for cancer diagnostics. He expanded upon how these methods can be combined in a compact physical form via endocscopy, and the challenges with combining imaging results, and the future for the field. I hope you enjoy as much as I did; Dr. Sawyer is advancing not only a highly interesting field, but one that holds a potential for improving humanity in a very tangible way. Links: 1) Dr. Sawyer's Lab - Biomedical Optics and Optical Measurement Laboratory: https://wp.optics.arizona.edu/tsawyer/ 2) Dr. Sawyer's Dissertation: https://repository.arizona.edu/handle/10150/657772 3) Dr. Jennifer Barton's Lab: https://bmeoptics.engr.arizona.edu/ 4) Texture Analysis of OCT in ovarian tissue: https://iopscience.iop.org/article/10.1088/1361-6560/aaefd2/meta 5) Evaluation of illumination system uniformity for wide-field biomedical hyperspectral imaging :https://iopscience.iop.org/article/10.1088/2040-8986/aa6176/meta 6)Fluorescence and Multiphoton Imaging for Tissue Characterization of a Model of Postmenopausal Ovarian Cancer: https://onlinelibrary.wiley.com/doi/abs/10.1002/lsm.23251 7) Milford Track: https://www.newzealand.com/us/feature/milford-track/

Hyemin Yoo on the Sine Condition Test, Deflectometry, and Optical Alignment

I spoke with Hyemin Yoo, who recently completed her dissertation on a combined Sine Condition/Deflectometry test method for optical alignment. Hyemin discusses the methodology in detail, starting with an introduction to the background of optical alignment, the sine condition test, and deflectometry. She then explores how to define a robust test approach, including simulations and as built test methods. Her approach, termed SCT+, provided an excellent optical alignment performance, in simulated and real world tests, of tens of nanometers. I hope you enjoy. Links 1) Contact Hyemin directly for her dissertation: ⁠hyoo030@arizona.edu⁠ 2) Alignment with a combination of deflectometry and the sine condition test ⁠https://opg.optica.org/ao/abstract.cfm?uri=ao-62-7-1677 [⁠https://opg.optica.org/ao/abstract.cfm?uri=ao-62-7-1677] 3) Pioneers in Optics: Ernst Abbe (1840-1905) https://academic.oup.com/mt/article/17/1/38/6820661?login=false [https://academic.oup.com/mt/article/17/1/38/6820661?login=false] 4) Fundamentals of Geometrical Optics by Virendra Mahajan https://spie.org/Publications/Book/2053717#_=_ [https://spie.org/Publications/Book/2053717#_=_] 5) J.H. Burge, C. Zhao, M. Dubin, and S. Lampen. Determination of off-axis aberrations of imaging systems using on-axis measurements. In Novel Optical Systems Design and Optimization XIV, volume 8129, page 81290F. SPIE, 2011. Backup Publisher: International Society for Optics and Photonics. [https://www.spiedigitallibrary.org/conference-proceedings-of-spie/8129/81290F/Determination-of-off-axis-aberrations-of-imaging-systems-using-on/10.1117/12.903385.short] 6) T.T. Elazhary, P. Zhou, C. Zhao, and J.H. Burge. Generalized sine condition. 54(16):5037–5049, 2015. Publisher: OSA. [https://opg.optica.org/ao/abstract.cfm?uri=ao-54-16-5037]

Eric Goodwin on Interferometry, Optics, and Metrology

Eric Goodwin wrote the Field Guide to Interferometric Testing, and now is the Director of Optical Sciences at Nikon Research Corporation of America. In his work, he has undoubtedly worked on cutting edge optical systems and products, providing him a unique insight into delivering reliable solutions at the forefront of optical products. Eric discusses his deep background in optical metrology and testing, and additionally shares insights regarding managing complex optics projects and teams. Lastly, I had the pleasure of sharing stories with Eric regarding our own experiences working with Dr. Barrett and Dr. Greivenkamp. References: 1) Field Guide to Interferometric Optical Testing [https://spie.org/Publications/Book/702897] 2) Nikon Optics Research [https://www.nikon.com/company/technology/rd/] 2) Campbell, E W, Phillion, D W, and Sommargren, G E. Sub-nanometer interferometry for aspheric mirror fabrication. United States: N. p., 1999. Web. [https://wp.optics.arizona.edu/jcwyant/wp-content/uploads/sites/13/2016/08/15-Sommargren-ICPE99.pdf] 3) An example of the use of point diffraction interferometry [https://iopscience.iop.org/article/10.1088/0022-3735/17/4/003/pdf] 4) Theory and Application of Point-Diffraction Interferometers [https://iopscience.iop.org/article/10.7567/JJAPS.14S1.351]

Joel Berkson on Fringe Metrology and Starting an Optical Metrology Company

Joel Berkson sat down to discuss forming his optical metrology company, Fringe Metrology. Joel discusses the ups and downs of creating a startup, why more people should try it, and how to evaluate a product market fit before diving in head first. Joel expands on how they have refined Fringe Metrology's product fit and offerings to meet market needs, particularly in the area of metrology for larger, often rougher surface optical elements. This was a great conversation, an it was a delight to hear Joel's passion and candid reflection on his experience forming a business. Links: 1. Company Website: https://www.fringemetrology.com/ 2. Joel's Dissertation: https://repository.arizona.edu/handle/10150/670875 3. NSF I-Corp Program: https://new.nsf.gov/funding/initiatives/i-corps