| Patent Number |
Title Of Patent |
Date Issued |
| 7092421 |
Unipolar, intraband optoelectronic transducers with micro-cavity resonators |
August 15, 2006 |
| An optoelectronic transducer comprises a unipolar, intraband active region and a micro-cavity resonator. The resonator includes a 2D array of essentially equally spaced regions that exhibits resonant modes. Each of the spaced regions has a depth that extends through the active region and |
| 6836499 |
Optical amplifier for quantum cascade laser |
December 28, 2004 |
| Techniques for amplifying light produced by a quantum cascade laser are described. An assembly according to the present invention includes an optical amplifier having an optical input and an optical output. The optical output has an area significantly greater than that of the optical |
| 6760354 |
Intersubband light emitters with injection/relaxation regions doped to different levels |
July 6, 2004 |
| In an intersubband light emitter, at least two injection/relaxation (I/R) regions contiguous with the same RT region have different doping levels. Preferably, one I/R region has a doping level that is at least 100 times lower than that of the other I/R region. In one embodiment, one I/R |
| 6690699 |
Quantum cascade laser with relaxation-stabilized injection |
February 10, 2004 |
| An optical gain medium has first and second active layers and an injector layer interposed between the first and second active layers. The active layers have upper minibands and lower minibands. The injector layer has a miniband that transports charge carriers from the lower miniband of |
