WorldCat Identities

Gmachl, Claire F.

Overview
Works: 15 works in 67 publications in 2 languages and 615 library holdings
Genres: Conference papers and proceedings 
Roles: Other, Author, Editor
Publication Timeline
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Most widely held works by Claire F Gmachl
Novel in-plane semiconductor lasers : 21-23 January 2002, San Jose [Calif.], USA by Claire F Gmachl( )

12 editions published in 2002 in English and held by 135 WorldCat member libraries worldwide

Novel in-plane semiconductor lasers II : 27-29 January, 2003, San Jose, California, USA( )

11 editions published in 2003 in English and held by 128 WorldCat member libraries worldwide

Novel in-plane semiconductor lasers III : 26-28 January 2004, San Jose, California, USA( )

12 editions published in 2004 in English and held by 120 WorldCat member libraries worldwide

Infrared to terahertz technologies for health and the environment : 24-25 October, 2005, Boston, Massachusetts, USA( )

12 editions published in 2005 in English and held by 105 WorldCat member libraries worldwide

Infrared, mid-IR, and terahertz technologies for health and the environment II : 10 September 2007, Boston, Massachusetts, USA by med-IR, and terahertz technologies for health and the environment Infrared( )

8 editions published in 2007 in English and held by 84 WorldCat member libraries worldwide

Conference on Lasers and Electro-Optics 2010 : Postdeadline Papers: Laser Science to Photonic Applications( )

2 editions published in 2010 in English and held by 31 WorldCat member libraries worldwide

Microfluidic Devices for High Throughput Cell Sorting and Chemical Treatment by Kevin Loutherback( Book )

1 edition published in 2011 in English and held by 2 WorldCat member libraries worldwide

Separation by size is a fundamental analytical and preparative technique in biology, medicine, and chemistry. Deterministic lateral displacement (DLD) arrays are microfluidic devices capable of high-precision particle sorting based on size. In this thesis, we will discuss improvements in the functionality of DLD arrays and several new applications. We'll first discuss a methodology for performing sequential on-chip chemical treatment by using the DLD array to direct particles in the "bumping" trajectory across co-flowing reagent streams and demonstrates this technique with platelet labeling and washing and E. Coli lysis and chromosomal separation. We then discuss a deterministic microfluidic ratchet that could separate particles in an intermediate size range using a DLD array with triangular posts in an oscillating flow. We then extended this idea of using triangular posts in DLD arrays to continuous-flow operation and showed significant performance enhancements over arrays with circular posts when the triangle vertex is used as the displacement edge. Taking this idea of increasing device throughput to the next step, we developed a highly parallelized DLD array architecture for processing macroscopic fluid volumes by operating many arrays in parallel and showed flow rates on the order of 10 mL/min with a single-layer device and applied these high throughput DLD arrays to isolating viable circulating tumor cells from blood and dewatering algae for biofuel production
Quantum Cascade Lasers( Book )

2 editions published in 2005 in English and held by 2 WorldCat member libraries worldwide

The overall goal of DARPA PWASSP is the development of innovative Quantum Cascade (QC) lasers that are spectrally, spatially and temporal agile, and to deliver them for applications in sensing and signal processing. Significant advances in several fields closely aligned with these goals have been made, namely in the development of faster, more spectrally agile, and generally novel QC lasers, as outlined in the following in more detail
Electro-optic counter-phase modulation for broadband radio-frequency interference cancellation by John Suarez( Book )

1 edition published in 2012 in English and held by 2 WorldCat member libraries worldwide

This dissertation presents an optical method of cancelling radio-frequency interference, and system implementations of this method. The method is referred to as electro-optic counter-phase modulation. The method enables optical cancellation of radio-frequency interference, or opto-cancellation for brevity. The research which drives the system's continued development centers around the general problem of co-site interference cancellation
Dynamical imaging using spatial nonlinearity by Christopher Barsi( Book )

1 edition published in 2011 in English and held by 2 WorldCat member libraries worldwide

On the other hand, Abbe's theory does not take into account the dynamical propagation of a signal. It is true that nonlinear optics has been used in imaging methods by exploiting the presence and interaction of many photons at once. However, to date, all nonlinear methods have utilized only temporal frequency mixing, which are typically point processes that circumvent linear limits by generating shorter wavelengths, tighter focal spots, and less unwanted scattering. Beam propagation from the sample to detector is still linear, so that observations are still restricted by the numerical aperture of the system
Widely Tunable and High Power Mid-Infrared Quantum Cascade Lasers( )

1 edition published in 2001 in English and held by 1 WorldCat member library worldwide

Single mode cw and pulsed distributed feedback (DFB) QC lasers with wide current tuning and high single mode power, have been realized at lambda app. = 4.6 nm; 5.2 nm, 8 nm and 9.5-10 nm and their trace gas sensing ability (parts per billion in volume or less) has been demonstrated by a variety of spectroscopic techniques. These devices, free-running and stabilized, had cw linewidths of 1 MHz and 10 KHz, respectively. Optical powers in excess of 0.5W (1W) at 300K (200K) was obtained in 75-stage structures; the cw operating temperature was increased to 175K using epitaxial-side heat sinking. New chirped superlattice active region designs yielded greater optical power per stage and allowed extension of the operating wavelength to 19 nm. These longwavelength QCLs use metal semiconductor waveguides supporting a surface plasmon mode, which allows greater optical confinement, and hence lower thresholds than conventional semiconductor waveguides of nearly double thickness. A QCL lasing simultaneously at two or more widely spaced wavelengths and a bidirectional QCL emitting different wavelengths for opposite bias polanty were demonstrated. Gain switching and active modelocking of QC lasers at 5 and 8 nm gave pulse widths of 90 ps and a few ps, respectively
Thermoheliodome Testing: Evaluation Methods for Testing Directed Radiant Heat Reflection( )

1 edition published in 2015 in English and held by 1 WorldCat member library worldwide

Abstract: The Thermoheliodome is a prototype experimental pavilion that produces comfort through the manipulation of the mean radiant temperature generated by a combination of evaporative cooling and radiant heat reflection. We present the development of a sensing and analysis method for measuring the impact on radiant temperature and other performance data for the space, along with the initial system measurements. This is an environmental control station through which low cost microcontrollers enable distributed networked nodes to take measurements of relevant system parameters. The system measurements show a reduction of mean radiant temperature by 2-3 °C using evaporative cooling and strategic reflection
High-Efficiency and High-Power Mid-Wave Infrared Cascade Lasers( )

1 edition published in 2009 in English and held by 1 WorldCat member library worldwide

Quantum cascade laser (QCL) performance continues to improve towards the requirements of applications such as infrared counter measures. However, key metrics, such as wall-plug efficiency (WPE), are still not fully met. DARPA's EMIL program continues to support progress in QCLs, and this report summarizes the Princeton team's work during Phase I of this program. Although the work systematically addressed all major facets of efficiency, the greatest advancements involved injection designs, which improved almost all efficiency components. Strain compensated QCLs with heterogeneous injectors produced low voltage defect. The active core consisted of interdigitated undoped and doped injectors followed by nominally identical optical transitions. The undoped injectors were designed with reduced voltage defect while the doped injector designs were more conventional. The measured average voltage defect was less than 79 meV. At 80 K, a 2.3 mm long, back facet high reflectance coated laser had an emission wavelength of 4.7 micrometers and output 2.3 W pulsed power with 19% peak WPE. Other QCLs emitting at 4.2 micrometers featured a low voltage defect and short injector with only four quantum wells. Devices with a voltage defect of 20 meV and a record voltage efficiency of 91% were demonstrated for pulsed operation at 180 K. Voltage efficiencies of greater than 80% were exhibited at room temperature. WPEs ranging from 21% at cryogenic temperatures to 5.3% at room temperature were achieved. Interface roughness effects were analyzed as in homogeneous broadening, explaining the temperature dependent QCL gain spectra and suggesting improved designs. Specifically, density-matrix theory revealed benefits from stronger coupling between injector and upper laser level that led to low-temperature pulsed QCLs nearing 50% WPE
Frequenzverstimmbare, oberflächenemittierende Halbleiterlaserdioden mit vertikalem Resonator( Book )

1 edition published in 1995 in German and held by 1 WorldCat member library worldwide

Quantum cascade laser( Visual )

1 edition published in 2000 in English and held by 0 WorldCat member libraries worldwide

 
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Audience level: 0.69 (from 0.67 for Novel in-p ... to 1.00 for Quantum ca ...)

Alternative Names
Claire F. Gmachl

Claire F. Gmachl Austrian electrical engineer

Claire F. Gmachl ingenieur uit Oostenrijk

Gmachl, Claire

Gmachl, Claire F.

Gmachl, Claire G.

Гмахль, Клэр

克莱尔·格马赫尔

Languages
English (66)

German (1)