Acta Optica Sinica, Volume. 31, Issue s1, 100105(2011)
Dual Band Infra-Red Protective Coatings on Germanium Substrate
GeC coatings with different refractive index, DLC coatings and dual band IR protective coatings are deposited onto Ge substrates by means of magnetron sputtering. The IR transmittance and micro hardness are investigated by Fourier transform infrared spectroscopy (FTIR) and micro hardness meter, respectively. The hardness of the samples is enhanced obviously by GeC, DLC and the dual band IR protective coatings. Furthermore, the dual band IR protective coatings have high transmittance of larger than 94% in both 3.7~4.8 μm and 7.5~10.5 μm range, and also have greater hardness than both GeC and DLC samples. The dual band IR protective coatings pass the environmental testing according to GJB2485-95.
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He Guangzong, Xiong Changxin, Li Qiantao, Wu Xiaoli. Dual Band Infra-Red Protective Coatings on Germanium Substrate[J]. Acta Optica Sinica, 2011, 31(s1): 100105
Category: Materials
Received: Aug. 31, 2010
Accepted: --
Published Online: Jun. 23, 2011
The Author Email: Guangzong He (hegz118100@126.com)