{"id":17946,"date":"2020-05-03T21:19:30","date_gmt":"2020-05-03T19:19:30","guid":{"rendered":"https:\/\/www.opticalsolutions.it\/sapphire-en\/germanium-ge\/"},"modified":"2020-07-18T14:13:39","modified_gmt":"2020-07-18T12:13:39","slug":"germanium-ge","status":"publish","type":"post","link":"https:\/\/www.opticalsolutions.it\/en\/defence-ir-components-en\/germanium\/germanium-ge\/","title":{"rendered":"Germanium (Ge)"},"content":{"rendered":"

[vc_row css_animation=”” row_type=”row” use_row_as_full_screen_section=”no” type=”full_width” angled_section=”no” text_align=”left” background_image_as_pattern=”without_pattern” css=”.vc_custom_1588090724596{padding-top: 40px !important;padding-right: 5px !important;padding-bottom: 40px !important;padding-left: 5px !important;background-color: #ffffff !important;}” z_index=””][vc_column width=”1\/2″][vc_column_text]Germanium (Ge) crystal is a chemical inert material with an high transmission in the range 2-12\u03bcm. It is commonly used for windows and optical components for industrial and defence applications.<\/p>\n

[\/vc_column_text][vc_separator type=”small” position=”left” color=”#da2c5c” thickness=”6px” width=”40px” up=”16″ down=”16″][vc_empty_space][\/vc_column][vc_column width=”1\/2″][vc_single_image image=”18764″ img_size=”full” alignment=”center” style=”vc_box_outline” onclick=”link_image” qode_css_animation=””][\/vc_column][\/vc_row][vc_row css_animation=”” row_type=”row” use_row_as_full_screen_section=”no” type=”full_width” angled_section=”no” text_align=”left” background_image_as_pattern=”without_pattern”][vc_column][vc_column_text]\n\n\n\n\t\n\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t
Specification<\/th>\n<\/tr>\n<\/thead>\n
Transmission wavelength<\/td>2\u00b5m -12\u00b5m <\/td>\n<\/tr>\n
Material<\/td>Germanium (Ge)<\/td>\n<\/tr>\n
Density (gr\/cm\u00b3)<\/td>5.33<\/td>\n<\/tr>\n
Dielectric constant<\/td>16.6 @9.37GHZ<\/td>\n<\/tr>\n
Melting point (\u00b0C)<\/td>936<\/td>\n<\/tr>\n
Coefficient of elasticity<\/td>C\u2081\u2081=129 C\u2081\u2081=48.3 C\u2081\u2081=67.1<\/td>\n<\/tr>\n
Thermal expansion coefficient (1\/\u00b0C)<\/td>6.1*10\u00af\u2076 @298k
\n<\/td>\n<\/tr>\n
Thermal Conductivity (J\/k.m.s.)<\/td>163.3 @273k<\/td>\n<\/tr>\n
Specific heat (J\/g.k)<\/td>0.31<\/td>\n<\/tr>\n
Knoop hardness (Kg\/mm\u00b2)<\/td>780<\/td>\n<\/tr>\n
Young modulus (GPa)<\/td>102.7<\/td>\n<\/tr>\n
Shear modulus (GPa)<\/td>67<\/td>\n<\/tr>\n
Poisson ratio<\/td>0.28<\/td>\n<\/tr>\n
Bulk modulus (GPa)<\/td>77.2<\/td>\n<\/tr>\n
Bulk Absorption coefficient (l\/cm)<\/td>1.3*10\u00af\u00b3 @3800nm<\/td>\n<\/tr>\n
Thermo-optical coefficient<\/td>4.08*10\u00af\u2074 @10600nm<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n[\/vc_column_text][vc_empty_space][vc_empty_space][\/vc_column][\/vc_row][vc_row css_animation=”” row_type=”row” use_row_as_full_screen_section=”no” type=”full_width” angled_section=”no” text_align=”left” background_image_as_pattern=”without_pattern”][vc_column][vc_column_text]<\/p>\n

Germanium (Ge)<\/h2>\n

prism (large size, wedge, Pechan, ATR, heteromorphic, powell, right angle…)<\/h2>\n

[\/vc_column_text][vc_separator type=”normal”][vc_empty_space][\/vc_column][\/vc_row][vc_row css_animation=”” row_type=”row” use_row_as_full_screen_section=”no” type=”full_width” angled_section=”no” text_align=”left” background_image_as_pattern=”without_pattern”][vc_column][vc_column_text]\n\n\n\n\t\n\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t
Technical parameter<\/th>Commercial grade<\/th>Precision grade<\/th>High precision grade<\/th>\n<\/tr>\n<\/thead>\n
Dimension range<\/td>1-600mm<\/td>2-600mm<\/td>2-600mm<\/td>\n<\/tr>\n
Dimension tolerance<\/td>\u00b10.1mm<\/td>\u00b10.025mm<\/td>\u00b10.01mm<\/td>\n<\/tr>\n
Thickness tolerance<\/td>\u00b10.1mm<\/td>\u00b10.025mm<\/td>\u00b10.01mm<\/td>\n<\/tr>\n
Angle tolerance<\/td>\u00b13'<\/td>\u00b130\"<\/td>\u00b15\"<\/td>\n<\/tr>\n
Surface quality<\/td>60-40<\/td>40-20<\/td>20-10<\/td>\n<\/tr>\n
Surface accuracy<\/td>1.0\u03bb<\/td>\u03bb\/10<\/td>\u03bb\/20<\/td>\n<\/tr>\n
Coating<\/td>3-5\u00b5m or 8-12\u00b5m AR, <2% per surface<\/td>\n<\/tr>\n
Bevelling<\/td>0.1-0.5mmx45\u00b0<\/td>\n<\/tr>\n
Substrate<\/td>Germanium (Ge)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n[\/vc_column_text][\/vc_column][\/vc_row][vc_row css_animation=”” row_type=”row” use_row_as_full_screen_section=”no” type=”full_width” angled_section=”no” text_align=”left” background_image_as_pattern=”without_pattern”][vc_column][vc_empty_space][vc_empty_space][\/vc_column][\/vc_row][vc_row css_animation=”” row_type=”row” use_row_as_full_screen_section=”no” type=”full_width” angled_section=”no” text_align=”left” background_image_as_pattern=”without_pattern”][vc_column][vc_column_text]<\/p>\n

Germanium (Ge)<\/h2>\n

windows<\/h2>\n

[\/vc_column_text][vc_separator type=”normal”][vc_empty_space][\/vc_column][\/vc_row][vc_row css_animation=”” row_type=”row” use_row_as_full_screen_section=”no” type=”full_width” angled_section=”no” text_align=”left” background_image_as_pattern=”without_pattern”][vc_column][vc_column_text]\n\n\n\n\t\n\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t
Technical parameter<\/th>Commercial grade<\/th>Precision grade<\/th>High precision grade<\/th>\n<\/tr>\n<\/thead>\n
Dimension range<\/td>1-600mm<\/td>2-600mm<\/td>2-600mm<\/td>\n<\/tr>\n
Dimension tolerance<\/td>\u00b10.1mm<\/td>\u00b10.025mm<\/td>\u00b10.01mm<\/td>\n<\/tr>\n
Thickness tolerance<\/td>\u00b10.1mm<\/td>\u00b10.025mm<\/td>\u00b10.01mm<\/td>\n<\/tr>\n
Angle tolerance<\/td>\u00b13'<\/td>\u00b11'<\/td>\u00b130\"<\/td>\n<\/tr>\n
Surface quality<\/td>60-40<\/td>40-20<\/td>20-10<\/td>\n<\/tr>\n
Surface accuracy<\/td>1.0\u03bb<\/td>\u03bb\/10<\/td>\u03bb\/20<\/td>\n<\/tr>\n
Coating<\/td>3-5\u00b5m or 8-12\u00b5m AR, <2% per surface<\/td><\/td><\/td>\n<\/tr>\n
Bevelling<\/td>0.1-0.5mmx45\u00b0<\/td>\n<\/tr>\n
Substrate<\/td>Germanium (Ge)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n[\/vc_column_text][\/vc_column][\/vc_row]<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"

Filters that cut off as much as possible of the wavelength light shorter than a specific wavelength, while transmitting as<\/p>\n","protected":false},"author":2,"featured_media":18764,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[379],"tags":[],"class_list":["post-17946","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-germanium"],"_links":{"self":[{"href":"https:\/\/www.opticalsolutions.it\/en\/wp-json\/wp\/v2\/posts\/17946","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.opticalsolutions.it\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.opticalsolutions.it\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.opticalsolutions.it\/en\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.opticalsolutions.it\/en\/wp-json\/wp\/v2\/comments?post=17946"}],"version-history":[{"count":4,"href":"https:\/\/www.opticalsolutions.it\/en\/wp-json\/wp\/v2\/posts\/17946\/revisions"}],"predecessor-version":[{"id":18859,"href":"https:\/\/www.opticalsolutions.it\/en\/wp-json\/wp\/v2\/posts\/17946\/revisions\/18859"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.opticalsolutions.it\/en\/wp-json\/wp\/v2\/media\/18764"}],"wp:attachment":[{"href":"https:\/\/www.opticalsolutions.it\/en\/wp-json\/wp\/v2\/media?parent=17946"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.opticalsolutions.it\/en\/wp-json\/wp\/v2\/categories?post=17946"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.opticalsolutions.it\/en\/wp-json\/wp\/v2\/tags?post=17946"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}