Navigation Links
Sandia Labs reports first monolithic terahertz solid-state transceiver
Date:6/29/2010

ALBUQUERQUE, N.M. Sandia National Laboratories researchers have taken the first steps toward reducing the size and enhancing the functionality of devices in the terahertz (THz) frequency spectrum.

By combining a detector and laser on the same chip to make a compact receiver, the researchers rendered unnecessary the precision alignment of optical components formerly needed to couple the laser to the detector.

The new solid-state system puts to use the so-called "neglected middle child" frequency range between the microwave and infrared parts of the electromagnetic spectrum.

Terahertz radiation is of interest because some frequencies can be used to "see through" certain materials. Potentially they could be used in dental or skin cancer imaging to distinguish different tissue types. They also permit improved nondestructive testing of materials during production monitoring. Other frequencies could be used to penetrate clothing, and possibly identify chemical or biological weapons and narcotics.

Since the demonstration of semiconductor THz quantum cascade lasers (QCLs) in 2002, it has been apparent that these devices could offer unprecedented advantages in technologies used for security, communications, radar, chemical spectroscopy, radioastronomy and medical diagnostics.

Until now, however, sensitive coherent transceiver (transmitter/receiver) systems were assembled from a collection of discrete and often very large components. Similar to moving from discrete transistor to integrated chips in the microwave world and moving from optical breadboards to photonic integrated circuits in the visible/infrared world, this work represents the first steps toward reduction in size and enhanced functionality in the THz frequency spectrum.

The work, described in the current issue (June 27, 2010) of "Nature Photonics," represents the first successful monolithic integration of a THz quantum-cascade laser and diode mixer to form a simple, but generically useful, terahertz photonic integrated circuit a microelectronic terahertz transceiver.

With investment from Sandia's Laboratory-Directed Research and Development (LDRD) program, the lab focused on the integration of THz QCLs with sensitive, high-speed THz Schottky diode detectors, resulting in a compact, reliable solid-state platform. The transceiver embeds a small Schottky diode into the ridge waveguide cavity of a QCL, so that local-oscillator power is directly supplied to the cathode of the diode from the QCL internal fields, with no optical coupling path.


'/>"/>

Contact: Neal Singer
nsinger@sandia.gov
505-845-7078
DOE/Sandia National Laboratories
Source:Eurekalert

Related biology technology :

1. Texas Tech, U of Utah win Sandia microdevice competition
2. Sandia researchers Phillips, Moody named MRS Fellows
3. Sandia, SRC win LES award for NINE program outreach
4. Sandia researchers construct carbon nanotube device that can detect colors of the rainbow
5. Cardio3 BioSciences Reports Positive Three-Month Data From its Clinical Trial of C-Cure(R) in Heart Failure
6. Disease and Therapy Review: Impetigo Now Available at ReportsandReports
7. Disease and Therapy Review: Asthma Now Available at ReportsandReports
8. Disease and Therapy Review: Bladder Cancer Now Available at ReportsandReports
9. Gastrointestinal Disorders Therapeutics to 2016 - High Unmet Needs Triggering Strong Growth in Crohns Disease and Irritable Bowel Syndrome Markets Now Available at ReportsandReports
10. Quantum computer a stage closer with silicon breakthrough, reports Nature journal
11. ChemoCentryx Reports Positive Phase I Study Results for CCX354 at the Annual European Congress of Rheumatology (EULAR)
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/25/2017)... , ... April 25, 2017 , ... As part of ... series will explore the laboratory testing for DIC in order to illuminate this clinical ... which can occur in hospitalized patients resulting in a high degree of morbidity and ...
(Date:4/25/2017)... CA (PRWEB) , ... April 25, 2017 , ... ... of L3 Healthcare, is pleased to announce the company is now a certified ... The iMedNet software certification enables the company’s clinical research team to build, ...
(Date:4/25/2017)... ... April 25, 2017 , ... ... & Rehabilitation, P.A. , proudly announced today that acclaimed physiatrist Matthew Terzella, MD, ... on May 15, 2017. , Dr. Terzella completed his residency in Physical Medicine ...
(Date:4/25/2017)... ... 2017 , ... Leaders of Quorum Review IRB and Kinetiq ... at this week’s Association of Clinical Research Professionals (ACRP) 2017 Meeting & Expo ... , "We are excited to present subject matter expertise on topics that impact the ...
Breaking Biology Technology:
(Date:3/24/2017)... Research and Markets has announced the addition of the ... Forecast to 2025" report to their offering. ... The Global Biometric Vehicle Access System ... over the next decade to reach approximately $1,580 million by 2025. ... forecasts for all the given segments on global as well as ...
(Date:3/22/2017)... , March 21, 2017 Vigilant ... company serving law enforcement agencies, announced today the appointment ... as director of public safety business development. ... law enforcement experience, including a focus on the aviation ... his most recent position, Mr. Sheridan served as the ...
(Date:3/9/2017)... MELBOURNE , Australia , March ... clinical study data at the prestigious World Lung Imaging ... Dr. Andreas Fouras , was invited to deliver ... and pulmonary medicine. This globally recognised event brings together ... and share the latest developments in lung imaging. ...
Breaking Biology News(10 mins):