Chirumamilla, ManoharManoharChirumamillaArya, MahimaMahimaAryaGanguly, AnkitaAnkitaGangulyRout, Surya SnataSurya SnataRoutKrishnamurthy, Gnanavel VaidhyanathanGnanavel VaidhyanathanKrishnamurthyKrekeler, TobiasTobiasKrekelerRitter, MartinMartinRitterStörmer, MichaelMichaelStörmerPetrov, AlexanderAlexanderPetrovEich, ManfredManfredEich2021-12-142021-12-142021-05Conference on Lasers and Electro-Optics (CLEO 2021)http://hdl.handle.net/11420/11291We measure and compare the optical properties of thin refractory metal films (TiN, W, Mo and Ir) at temperatures up to 1000 °C. In-situ ellipsometry is used to measure the optical constants. Refractory metals show long-term structural stability at 1000 °C for 120 h.enConference PaperConference Paper