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 |
