From membrane-in-the-middle to mirror-in-the-middle with a high-reflectivity sub-wavelength grating

Corey Stambaugh, Haitan Xu, Utku Kemiktarak +2

We demonstrate a "membrane in the middle" optomechanical system using a silicon nitride membrane patterned as a subwavelength grating. The grating has a reflectivity of over 99.8%,…