TOPTICA Photonics AG is a privately held laser manufacturing company located in Munich-Graefelfing, Germany. More than 230 people develop, produce and provide research grade lasers for scientific applications as well as industry grade lasers for OEM integration. Key technologies comprise tunable single frequency diode lasers from 190 nm to 3500 nm, ps and fs pulsed fibre lasers from 488 nm to 2100 nm, frequency combs from 420 nm to 2100 nm, multi-colour laser engines, THz systems for frequency-domain or time-domain spectroscopy, and high power laser diodes & semiconductor optical amplifiers. For our important market quantum technologies (QT), TOPTICA is the main supplier of laser systems. In addition, we have started the research on and the development of QT subsystems and QT systems to push academic research as well as industrial realization of QT application systems and instruments. TOPTICA’s R&D department consists at present of more than 80 people, many with a degree in physics or engineering. In addition, more than a dozen colleagues with a phd in physics (mostly obtained within the field of quantum optics) work in other departments and strengthen TOPTICA’s QT spirit. Within iqClock Toptica will produce all laser systems for the integrated optical lattice clock, including the reference cavity and the optical frequency comb.