1. XXL gave an invited talk, titled "On-chip ultra-high Q CHI-2 microresonators for nonlinear optics and PIC applications", at CHI-2 photonics in microresonators and beyond online conference and doctoral school in 2021. (Download:2021-CHI 2.pdf)

2. XXL gave an invited talk, titled "Advancing integrated photonics and microreactor technologies with ultrafast laser processing", at Photonics West 2021.(Download:2021-PW-Cheng.pdf)

Presentation video:

https://www.spiedigitallibrary.org/conference-proceedings-of-spie/11673/116730W/Advancing-integrated-photonics-and-microreactor-technologies-with-ultrafast-laser-processing/10.1117/12.2585248.full?SSO=1

3. XXL gave a plenary talk, titled "3D microfabrication of large-scale objects in glass using an ultrafast laser",at International Conference on Ultrafast Optical Science “UltrafastLight-2020”. (Download: 2020-Moscow-ultrafastlight.pdf)

4. XXL gave an invited talk, titled "Ultra-low loss lithium niobatenanophotonics",at Photonics West 2020.(Download: 2020-PW-Cheng.pdf)

Presentation video:

https://www.spiedigitallibrary.org/conference-proceedings-of-spie/11266/112660A/Ultra-low-loss-lithium-niobate-photonics/10.1117/12.2543321.full?SSO=1

5. XXL gave an invited talk, titled "High resolution 3D printing with a low NA focal lens",at Photonics West 2019. (Download: 2019-PW-Cheng.pdf)

6. XXL gave a plenary talk, titled "Femtosecond laser 3D micromachining: from research prototype to industrial tool",at International Conference on Ultrafast Optical Science “UltrafastLight-2019”. (Download: 2019-Moscow-ultrafastlight.pdf)