Navigation Links
Germanium made laser compatible
Date:4/22/2013

Researchers from ETH Zurich, the Paul Scherrer Institute (PSI) and the Politec-nico di Milano have jointly developed a manufacturing technique to render the semiconductor germanium laser-compatible through high tensile strain. In their article recently published in "Nature Photonics", they reveal how they can gen-erate the necessary tensile strain efficiently. The scientists demonstrate how to use their method to effectively alter the optical properties of germanium, which is naturally unsuitable for lasing: "With a strain of three per cent, the material emits around twenty-five times more photons than in a relaxed state," explains Martin Sess, a doctoral student at the Laboratory for Nanometallurgy headed by Ralph Spolenak and the EMEZ at ETH Zurich. "That's enough to build lasers", adds his colleague Richard Geiger, a doctoral student at the Laboratory for Micro- and Nanotechnology at the PSI and the Institute for Quantum Electronics at ETH Zurich under Jrme Faist.

High tension through microbridges

With the new method, the researchers use the slight tension generated in ger-manium when it evaporates on silicon, to bring the germanium into a laser-compatible, strechted form. This prestrain is enhanced with so-called micro-bridges: the researchers centrally notch the sides of exposed germanium strips, which remain attached to the silicon layer at both ends. The two halves of the strip thus remain connected solely by an extremely narrow bridge, which is for physical reasons precisely where the strain in the germanium grows so intense that it becomes laser-compatible.

"The tensile strain applied to the germanium is comparable to the force exerted on a pencil as two lorries pull upon it in opposite directions," says Hans Sigg, the project manager at the PSI, explaining the feat on a micrometre scale in everyday proportions. Through the expansion of the material its properties change because the individual atoms slightly move ap
'/>"/>

Contact: Martin Sueess
mmartin.sueess@emez.ethz.ch
41-446-336-408
ETH Zurich
Source:Eurekalert

Page: 1 2

Related biology technology :

1. Eye Surgery Center of Michigan First in Southeast Michigan to Perform Bladeless Cataract Surgery Using New LenSx® Laser Technology
2. New method for enhancing thermal conductivity could cool computer chips, lasers and other devices
3. Research could improve laser-manufacturing technique
4. Cooling semiconductor by laser light
5. New laser can point the way to new energy harvesting
6. Metamaterials may advance with new femtosecond laser technique
7. UCSB Physicists mix 2 lasers to create light at many frequencies
8. CU-Boulder physicists use ultrafast lasers to create first tabletop X-ray device
9. JPSA Introduces Picosecond Laser Micromachining System
10. Calmar Laser Growth Reinforced by ISO 9001:2008 Certification
11. Worlds smallest semiconductor laser created by University of Texas scientists
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:1/22/2015)... Protocol Networks brings independent technology consulting to the ... consultants, Protocol Networks has recently announced its expansion into ... his company has attracted several clients in The Constitution ... as others. With the success of these engagements, Rogers ...
(Date:1/22/2015)... January 22, 2015 Dr. Greg Leyer of ... annual Scripps Natural Supplements Pre-Conference seminar on probiotics in San ... an annual continuing education conference for health care professionals. This ... the topic of probiotics in health. Dr. Leyer spoke about ...
(Date:1/22/2015)... Nueva Jersey , 22 de enero de 2015  El ... abre hoy su llamada a nominaciones para 2015. Este ... ha hecho, o tiene el potencial para hacer, contribuciones ... nominaciones se aceptarán hasta el 15 de marzo de ...
(Date:1/22/2015)... N.J. , Jan. 22, 2015  Derma Sciences, ... regeneration company focused on advanced wound care, announces ... placental tissues, have been added to the Premier, ... increases the opportunity for the AMNIOEXCEL® and AMNIOMATRIX® ...
Breaking Biology Technology:Protocol Networks Brings Independent Technology Consulting to the Constitution State 2El Dr. Paul Janssen Award for Biomedical Research emite su llamada a los nominados para 2015 2El Dr. Paul Janssen Award for Biomedical Research emite su llamada a los nominados para 2015 3El Dr. Paul Janssen Award for Biomedical Research emite su llamada a los nominados para 2015 4Derma Sciences Expands Access of its AMNIOTIC TISSUE Product Line with New Premier, Inc. Agreement 2Derma Sciences Expands Access of its AMNIOTIC TISSUE Product Line with New Premier, Inc. Agreement 3Derma Sciences Expands Access of its AMNIOTIC TISSUE Product Line with New Premier, Inc. Agreement 4Derma Sciences Expands Access of its AMNIOTIC TISSUE Product Line with New Premier, Inc. Agreement 5
... Watch out baby boomers, those 8th graders can talk ... curriculum at the tender age of 13, thanks to ... ,The Information Technology Academy (ITA), a joint venture of ... PEOPLE Program (Pre-college Enrichment Opportunity Program for Learning Excellence), ...
... Midwest has been approached by a variety of country ... regional biotech communities. These groups include: , ,1. The Swiss ... Singaporeans ,7. The Danish , ,None, however, have taken ... , ,In at least two previous columns, you have ...
... SoftSwitching Technologies , a high-technology spin-off of the University ... Thursday during the biggest blackout the nation has ever ... said, Near-simultaneous events were recorded in New York and ... spread across the northeastern United States, with the I-Grid ...
Cached Biology Technology:Joint Venture Trains Minority Students for IT Careers 2Joint Venture Trains Minority Students for IT Careers 3Japanese Continue Relentless Biotech Stake in Midwest 2Japanese Continue Relentless Biotech Stake in Midwest 3Japanese Continue Relentless Biotech Stake in Midwest 4Japanese Continue Relentless Biotech Stake in Midwest 5Japanese Continue Relentless Biotech Stake in Midwest 6Japanese Continue Relentless Biotech Stake in Midwest 7Japanese Continue Relentless Biotech Stake in Midwest 8Japanese Continue Relentless Biotech Stake in Midwest 9Local Company Records Blackout with Web-Based Monitoring System 2Local Company Records Blackout with Web-Based Monitoring System 3
(Date:1/22/2015)... 2015   EyeLock, Inc. , a market leader of iris-based ... Gerber to the new role of Senior Vice President ... development of mobile platforms and wearable solutions for EyeLock,s technologies. ... in the semiconductor industry to his role at EyeLock, with ...
(Date:12/24/2014)... , Dec. 23, 2014  Since its launch in December 2014, the ... eliminate the pain of trying to remember their usernames and ... fused to their smartphones. To assist people who have struggled ... company that created 1U and focuses on redefining identity, announced ...
(Date:12/22/2014)... Research and Markets ( http://www.researchandmarkets.com/research/fx4bg3/the_global ) ... Global Watermarking and Fingerprinting Markets" report to ... This insight provides an overview ... markets. Watermarking aims to control and monitor piracy ...
Breaking Biology News(10 mins):EyeLock Names Steve Gerber as Senior Vice President of Mobile and Wearables 21U Offers Best Solution to the Username / Password Dilemma: For FREE! 21U Offers Best Solution to the Username / Password Dilemma: For FREE! 3The Global Watermarking and Fingerprinting Markets 2
... evidence of social behavior among many species of animals, both ... lions live in packs, and hornets construct nests that can ... our feet, it appears that nematodesalso known as roundwormsare having ... was unknown how the worms communicate to one another when ...
... years, the growing demand for organic food products has led ... Faculty of Science, University of Copenhagen, a European research project ... origin of a food product and deciding whether or not ... such as olive oil, coffee and wine are sold at ...
... two new frog species in New Guinea, one of which is ... in the Jan. 11 issue of the online journal PLoS ... Austin of Louisiana State University. The new smallest vertebrate species ... Papua New Guinea, where it was found. The adult body size ...
Cached Biology News:Worm seeks worm: Caltech researchers find chemical cues driving aggregation in nematodes 2Worm seeks worm: Caltech researchers find chemical cues driving aggregation in nematodes 3Research prevents eco-fraud 2Research prevents eco-fraud 3
Mouse polyclonal antibody raised against a partial recombinant DDEF2. NCBI Entrez Gene ID = 8853...
Mouse monoclonal antibody raised against a partial recombinant ALAS2. NCBI Entrez Gene ID = ALAS2...
Mouse polyclonal antibody raised against a partial recombinant QPCT. NCBI Entrez Gene ID = 25797...
... raised against a partial recombinant IFNA2. ... recombinant protein is produced in E. coli. ... IU/ mg. OMIM: 147562, ... Number: MM951100564 MA Code: ...
Biology Products: