In this work, we show the light that propagate along a frequency synthetic dimension through EO modulation, can be reflected by a frequency domain mirror, which leads to interference and trapped state in frequency domain! 

We create a frequency domain crystal using EO modulation on a thin-film lithium niobate (TFLN) resonator (see our previous work on forming high-dimensional frequency crystals in a single TFLN resonator: https://doi.org/10.1364/OPTICA.395114).
The frequency domain mirror is then formed by mode-...

Read more about Our work on "Mirror-induced reflection in the frequency domain" has been published in Nature Communications!

Check our work here.

By implementing the general critical coupling for coupled-resonators, that we developed in our previous work, to the EO comb generation, we demonstrate an EO comb with 30% conversion efficiency and 132nm comb span.

The performance of our EO comb generator features a 100-times higher...

Read more about Our paper on "high efficiency and broadband on-chip electro-optic frequency comb generators" has been published in Nature Photonics!

We demonstrate monolithic and highly reflective mirrors that operate under high-power CW laser irradiation without damage.We measure reflectivities of greater than 98% and demonstrate damage-free operation using 10 kW of CW laser light at 1070 nm, focused to a spot of 750 μm diameter. In contrast, we observe damage to a conventional dielectric mirror when illuminated by the same beam. Congratulations!!! check the paper here.... Read more about Our paper on "Diamond mirrors for high-power continuous-wave lasers" published on Nature Communications!

Our group members presented 14 works at this year's CLEO conference across oral and poster presentations. This includes one postdeadline paper and a highlighted talk! It was great going to in-person conferences again!

Congratulations to Amirhassan, CJ, Daniel, David, Dylan, Eric, Linbo, Mengjie, Michael, Michelle, Rebecca, Sophie + Eliza, and Yaowen!