= Possible research topics for students = * RSE locking simulation and commissioning * Alignment sensing and controls simulation and commissioning * Effects of birefringence * PRC diagonalization, SRC diagonalization * Laser frequency stabilization * Interferometer characterizations (optical parameters, mode content, birefringence, high power effect, etc.) * Parametric instability modeling and mitigation * Effects from Gouy phases in PRC and SRC * Damping methods * Commissioning and upgrade of transmission monitor system (TMS-VIS, optical table cover, polarization monitor) * Output optics development (OMC, beam shutter etc.) * In-vacuum RF PD and RF QPD development * Upgrade of Mach-Zehnder modulator * Compatible with frequency (in-)dependent squeezing?