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Gmachl
Claire Gmachl, Princeton, NJ US
| Patent application number | Description | Published |
|---|---|---|
| 20090059235 | Rotationally Asymmetric Chaotic Optical Multi-Pass Cavity - The present invention relates to a rotationally asymmetric chaotic optical multi-pass cavity useful in optical gas sensing spectroscopy, optical delay lines, and laser amplification systems, for example. The cavity may include a single closed mirror having a light reflective surface that is deformed in two orthogonal directions and more particularly, but not exclusively, in the shape of a quadrupole in both horizontal and vertical planes. The cavity includes a light entry port and a light exit port which may be the same or separate ports, as well as a gas inlet and a gas outlet. The optical path length, the beam divergence rate, and the spot pattern are controlled by selecting the cavity deformation coefficients and the input beam direction to achieve the desired beam path and beam quality. | 03-05-2009 |
Claire F. Gmachl, Princeton, NJ US
| Patent application number | Description | Published |
|---|---|---|
| 20080273565 | EXCITED STATE QUANTUM CASCADE PHOTON SOURCE - A quantum cascade source, such as a QC laser, is provided comprising a plurality of repeat units each including an active region and an injector region. The active region includes at least two quantum wells that, in response to an applied electrical bias, provide a first, second, and third electron energy level, each resulting from a respective quantum well excited state. The first and second energy levels are configured so that an electron transition from the first energy level to the second energy level emits a photon of a selected wavelength. The second and third energy levels are configured so that an electron transition from the second energy level to the third energy level comprises a nonradiative transition to empty the second energy level sufficiently quickly to promote a population inversion between the first and second energy levels. | 11-06-2008 |
| 20110080930 | Highly Power-efficient and Broadband Quantum Cascade Lasers - The present invention relates generally to highly power-efficient quantum cascade sources, such as highly power-efficient quantum cascade lasers having ultra-strong coupling between injector and active regions which may be configured to provide broadband quantum cascade lasers. | 04-07-2011 |
Michael Gmachl, Vienna AT
| Patent application number | Description | Published |
|---|---|---|
| 20100113414 | THIAZOLYL-DIHYDRO-INDAZOLES - The present invention encompasses compounds of the general formula (1) | 05-06-2010 |