Mark Harrison
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profmcharrison.bsky.social
Mark Harrison
@profmcharrison.bsky.social
Assistant Professor in the Fowler School of Engineering at Chapman University. Studying integrated photonics, mostly for computing applications. Husband and father to two boys. Opinions are my own. Soli Deo Gloria.

https://harrison-lab.com/
We decided to take a family photo while visiting my in-laws by the ocean. Caught some beautiful light at sunset, just before the sun dipped behind some clouds. But when it did, I pulled out my phone and managed to capture this.
November 24, 2025 at 12:31 AM
Reposted by Mark Harrison
Physicist William Higinbotham was born #OTD in 1910. During the Manhattan Project he was the Electronics Group leader at Los Alamos.

In 1958, while working at Brookhaven Lab, he invented one of the first video games: “Tennis for Two.” It ran on an oscilloscope! 🧪 ⚛️

Image: Brookhaven National Lab
October 25, 2025 at 7:39 PM
Reposted by Mark Harrison
Also talked about The Onion being inefficient on purpose.

www.status.news/p/the-onion-...
July 7, 2025 at 2:29 PM
I’ve been baking a lot of rustic sourdough bread recently. This afternoon I tried making just a simple sandwich bread loaf. Pretty happy with how it looks, we’ll see what it’s like when I slice it open and how it tastes.
April 19, 2025 at 10:32 PM
I’ve been baking lots of bread, but I recently used my homemade dough to make a pizza. The dough ball was a little big, but the pizza was tasty
January 5, 2025 at 10:59 PM
Very proud of my student Max who gave a great talk at Chapman’s student scholar symposium this afternoon. He and the other student working on this project (also Max) have done great work and I hope to share more of their results soon.
December 4, 2024 at 11:26 PM
Chapman is once again looking for postdocs for the Grand Challenges Initiative fellowship! If you are interested in pursuing a postdoc in the area of optics and photonics, particularly in designing and engineering waveguide devices, please reach out!

apply.interfolio.com/159294
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December 2, 2024 at 7:02 PM
Yesterday I made bread from scratch for the first time. I was quite pleased with how it turned out.
November 12, 2024 at 1:46 AM
Very happy that, after a long wait for reviews, our work on three-wave mixing in an ENZ material without phase matching was accepted for publication. We coupled light into a thin film propagating mode and saw cascaded nonlinear interactions with CW lasers. Check it out! doi.org/10.1088/2515...
July 27, 2024 at 2:54 AM
We have a preprint up on three-wave mixing in an ENZ material without phase matching! My undergraduate student Kyle Wynne led this effort and will be presenting this work tomorrow (Jan. 30) at Photonics West. Go see his talk at 3:10pm in room 210! 💡https://doi.org/10.48550/arXiv.2401.02492
January 29, 2024 at 7:40 PM
Glad that the "official" version of this paper has finally been published! doi.org/10.1364/JOSA...
We have a preprint out exploring strategies for getting good results quickly when using inverse design for grating couplers. This spun out of another project and represents a big effort from an undergraduate student. arxiv.org/abs/2308.01893 💡
December 1, 2023 at 4:06 PM
Chapman is once again looking for postdoctoral research fellows for the Grand Challenges Initiative program!
 
The full job description can be found here:  apply.interfolio.com/136140

If you are interested in working with me, please send me a message or an email! Also happy to answer any questions
November 27, 2023 at 7:04 PM
We have a preprint out exploring strategies for getting good results quickly when using inverse design for grating couplers. This spun out of another project and represents a big effort from an undergraduate student. arxiv.org/abs/2308.01893 💡
November 1, 2023 at 3:37 PM
We are once again hiring at Chapman! I have had a great experience at Chapman and would be happy to share my thoughts with you if you are curious about what it’s like.

Come join us and help us as we continue to build our engineering school!

apply.interfolio.com/133097

apply.interfolio.com/133080
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October 14, 2023 at 8:44 PM
Snuck in a photo with Kyle during the poster session at FIO. I’m super proud of the work he’s done.
October 10, 2023 at 10:08 PM
For my first Bluesky post... I'm going to be at Frontiers in Optics in Tacoma starting tomorrow! My undergraduate student Kyle is presenting a poster tomorrow afternoon on some cool work with optical nonlinearities in ITO. Hoping to see some familiar faces and maybe meet some new photonics folks!
October 9, 2023 at 4:55 PM