Silicon window

AR and DLC coating on IR optics to enhance their transmission and strengthen their resistance.

Sinoptix Optical products with specifications : 3/ 2(2) rmst <50 nm, one face DLC and one face AR coating. [/av_textblock] [av_post_metadata post_selected='' seperator='/' before_meta_content='Category: ' after_meta_content='' margin='' margin_sync='true' align='left' custom_title='' size='' av-medium-font-size='' av-small-font-size='' av-mini-font-size='' alb_description='' id='wrapper-realisation-category' custom_class='' av_uid='av-kefu64re' admin_preview_bg=''] [av_metadata_item metadata='categories' before_meta='' after_meta='' link_meta='default' link_target='' av_uid='av-6xvxfp'] [/av_post_metadata] [av_toggle_container faq_markup='' initial='1' mode='accordion' sort='' styling='' colors='' font_color='' background_color='' border_color='' colors_current='custom' font_color_current='#0c73b7' background_current='' background_color_current='' background_gradient_current_color1='' background_gradient_current_color2='' background_gradient_current_direction='vertical' hover_colors='custom' hover_background_color='#0c73b7' hover_font_color='#ffffff' alb_description='' id='realisation-details' custom_class='' template_class='' av_uid='av-ke9xpc5g' sc_version='1.0'] [av_toggle title='Silicon window characteristics' tags='' custom_id='' av_uid='av-6f3pat' sc_version='1.0'] Silicon is a recommended material for IR applications, see below its specifications:

Material name	Silicon
Chemical formula	Si
Index of Refraction	2.50
Transmission range	1.2µm to 7µm
Density	2.33 g/cm3
Hardness	1100 Knoop
Young’s modulus	130.9 GPa
Thermal expansion	2.6*10-6 °K-1
Thermal conductivity	163 W/(m*°K)
Melting point	1690 °K

[/av_toggle]

Silicon window usage

Silicon windows are widely used for IR application, due to their good transmission of infrared wavelengths. Compare to other IR materials like CaF2 and MgF2 Silicon is not transparent in the visible range.

Main industries: