germanium laser element

First germanium laser MIT News

Jan 23 2020· Germanium and its oxide are transparent to infrared light Uses Germanium is an important semiconductor material It is commonly doped with arsenic or gallium at the level of one part per 1010 for electronics Germanium is also used as an alloying agent a catalyst and as a phosphor for fluorescent lamps

A new facet for germanium Technology Org

At the same time that the medical use of organic germanium flourished germanium also gained prominence in technology as a semiconductor for micro chips solar cells laser engineering superconductors and other technical industries This was truly a germanium era However this was soon to come to an abrupt end

Germanium Element Facts - Periodic Table of Elements and

Towards a Germanium and Silicon Laser The History and the Present Article based on the analysis of the indirect-transitions m atrix element 2 nd order perturbation theory

Lasing in strained germanium microbridges Nature

Uses Of Germanium Germanium acts as a semiconductor commonly doped with arsenic and other elements and used as a transistor in different electronic applications The oxides of Germanium includes a high index of dispersion and refraction which makes it perfect to use in wide-angle camera lenses objective lenses for microscopes


Germanium n p junctions with high phosphorus dopant activation 10 20 cm-3 and minimal dopant diffusion were achieved by P implantation and laser spike annealing LSA at temperatures ≥794 °C for 400 μ In addition there is no evidence of any residual extended defectivity near the junction after LSA

Group IV germanium-tin laser compatible with silicon chips

MIT researchers have demonstrated the first laser built from germanium that can produce wavelengths of light useful for optical communication It s also the first germanium laser to operate at room temperature Unlike the materials typically used in lasers germanium is easy to incorporate into existing processes for manufacturing silicon chips

Germanium Wafers 2016

Jan 31 2020· MIT researchers have discovered a method to predict and control the length of tunnels in solid germanium by growing it on silicon oxide strips on top of silicon These tunnels have potential to be used as light channels for silicon photonics or liquid channels for microfluidic devices

First germanium laser brings us closer to optical computers

Jan 29 2020· Germanium a chemical element between silicon and tin in Group 14 IVa of the periodic table a silvery-gray metalloid intermediate in properties between the metals and the nonmetals It did not become economically significant until after 1945 when its properties as a semiconductor in electronics were recognized

Germanium Detectors - Teledyne Judson

Researchers at MIT have demonstrated the first laser that uses the element germanium The laser which operates at room temperature could prove to be an important step toward computer chips that

Germanium metallicum Germanium Homeopathy for Health

First germanium laser brings us closer to optical computers PhysOrg com -- MIT researchers have demonstrated the first laser built from germanium that can produce wavelengths of …

Toward a Germanium Laser for Integrated Silicon Photonics

Germanium Detectors Germanium Short Form Catalog in PDF Format J16 Series detectors are high-quality Germanium photodiodes designed for the 800 to 1800nm wavelength range For applications where temperature stability of response is important near the …

PDF An electrically pumped Germanium laser

Oct 08 2019· Germanium is a chemical element that can be found in trace amounts in some ores and carbon-based materials Some people promote it as a treatment for HIV and AIDS cancer

Germanium Facts Atomic Number 32 or Ge

Erbium is a chemical element with the symbol Er and atomic number 68 A silvery-white solid metal when artificially isolated natural erbium is always found in chemical combination with other elements It is a lanthanide a rare earth element originally found in the gadolinite mine in Ytterby in Sweden from which it got its name

Germanium Made Laser-Compatible Research Technology

Germanium Ge is a gray-white element known as a semi-metal It has an atomic number of thirty-two and has a high luster at room temperature Interesting Germanium Facts Germanium is another element that was predicted by Mendeleev in 1871

Strained Germanium laser LMN Paul Scherrer Institut PSI

Nov 29 2017· Here we demonstrate a low-threshold compact group IV laser that employs a germanium nanowire under a 1 6 uniaxial tensile strain as the gain medium The amplified material gain in strained

Is Germanium a Miracle Cure

As a postdoc at MIT from 2007 to 2010 Liu worked on the first germanium laser and the first germanium-silicon electroabsorption modulator with Jurgen Michel and Lionel C Kimerling the Thomas

Germanium Facts

Germanium Laser Scientists at MIT have demonstrated the first laser that operates using the germanium element in a move that could bring us closer to optical computing

Low-threshold optically pumped lasing in highly strained

The group IV optical platform based on Si CMOS technology offers powerful solutions in the field of sensing data links from chip to chip and on-chip for data processing Plentiful of passive optical elements are already demonstrated and are contained in the libraries of commercially operating manufacturing lines However the full monolithic integration of active laser sources with electronic

PDF Towards a Germanium and Silicon Laser The History

To overcome a 4 lattice mismatch between the two semiconductors Michel s group deposits a thin germanium buffer layer on the silicon using low-temperature chemical-vapor deposition then grows a thicker germanium laser on the buffer at higher temperatures and anneals the structure to reduce threading dislocations

OSA An electrically pumped germanium laser

Germanium is a chemical element with the symbol Ge and atomic number 32 It is a lustrous hard-brittle grayish-white metalloid in the carbon group chemically similar to its group neighbours silicon and tin Pure germanium is a semiconductor with an appearance similar to elemental silicon

Germanium - Uses of Germanium Properties of Germanium

Group IV germanium-tin laser compatible with silicon chips Forschungszentrum Jülich and Paul Scherrer Institute scientists in cooperation with international partners have presented the first semiconductor consisting solely of group IV elements

It s Elemental - The Element Germanium

Electrically pumped lasing from Germanium-on-Silicon pnn heterojunction diode structures is demonstrated Room temperature multimode laser with 1mW output power is measured Phosphorous doping in Germanium at a concentration over 4x1019cm−3 is achieved A Germanium gain spectrum of nearly 200nm is observed

Germanium History Uses Facts Physical Chemical

Sep 26 2016· •Picosecond laser cutting of fragile 150 μm thin germanium wafers typically used for solar cell applications in liquid results in debris-free surfaces •Liquid-assisted laser cutting is much better than air-assisted laser cutting in terms of recast debris and cleanness of the resultant grooves

Germanium Laser - Big Think

article{osti 7080140 title = {Thermal runaway in germanium laser windows} author = {Wilner K and Klinger E and Wild W J } abstractNote = {A 1-D model of thermal runaway in germanium induced by IR laser radiation is presented

Germanium Windows

First proposed to exist by Dmitri Mendeleyev in 1871 based on gaps in his newly created Periodic Table of Elements germanium was discovered by the German chemist Clemens Winkler in the mineral argyrodite Ag 8 GeS 6 in 1886 Today germanium is primarily obtained from the smelting of zinc ores and from the byproducts of burning certain types of coal

OSA Analysis of germanium waveguide laser performance

Germanium Ge is a promising candidate for a CMOS compatible laser diode This is due to its compatibility with Silicon Si and its ability to be converted into a direct band gap material by

First germanium-tin semiconductor laser directly

Germanium Novotech is a global supplier of Germanium material The company is one of the leading Germanium providers in the United States Laser Electromagnetic interference EMI grade

Scientists construct the first germanium-tin semiconductor

Due to its broad transmission range and opacity in the visible portion of the spectrum germanium is well suited for IR laser applications As indicated by the plots in the Graphs tab germanium also acts as a longpass filter for wavelengths greater than 2 µm In addition germanium is inert to …

Germanium - Wikipedia

Jun 20 2019· Germanium has long been regarded as a promising laser material for silicon based opto-electronics It is CMOS-compatible and has a favourable band …

Germanium - Novotech Inc

Germanium Ge is a relatively hard high-density IR transmitting material that blocks UV and VIS wavelengths but allows IR from 2µm Germanium has the highest refractive index of commonly available IR-transmitters and has low optical dispersion