1 Thorlabs Crystalline Solutions, 114 E Haley St., Suite G, Santa Barbara, CA, 93101, USA. [email protected].
2 Christian Doppler Laboratory for Mid-IR Spectroscopy and Semiconductor Optics, Faculty Center for Nano Structure Research, Faculty of Physics, University of Vienna, Boltzmanngasse 5, A-1090, Vienna, Austria.
3 Vienna Doctoral School in Physics, University of Vienna, Boltzmanngasse 5, A-1090, Vienna, Austria.
4 National Institute of Standards and Technology, 100 Bureau Drive, Gaithersburg, MD, 20899, USA.
5 Thorlabs Crystalline Solutions, 114 E Haley St., Suite G, Santa Barbara, CA, 93101, USA.
6 Laboratoire Temps-Fréquence, Institut de Physique, Université de Neuchâtel, Avenue de Bellevaux 51, 2000, Neuchâtel, Switzerland.
7 Christian Doppler Laboratory for Mid-IR Spectroscopy and Semiconductor Optics, Faculty Center for Nano Structure Research, Faculty of Physics, University of Vienna, Boltzmanngasse 5, A-1090, Vienna, Austria. [email protected].