Title :
Gain and recovery dynamics of lithographically-defined quantum dot amplifiers
Author :
Silverman, Kevin L. ; Miaja-Avila, Luis ; Verma, Vimlesh ; Mirin, Richard P. ; Coleman, J.J.
Author_Institution :
Nat. Inst. of Stand. & Technol., Boulder, CO, USA
Abstract :
We directly measure the optical gain and threshold current of lithographically-defined quantum dots. A peak groundstate gain of 1.8 cm-1 is determined. We also measure the recovery dynamics of the groundstate with the device biased above and below transparency using ultrafast differential transmission spectroscopy.
Keywords :
ground states; high-speed optical techniques; optical variables measurement; quantum dot lasers; semiconductor optical amplifiers; semiconductor quantum dots; transparency; gain dynamics; groundstate recovery dynamics; lithographically-defined quantum dot amplifiers; optical gain measurement; peak groundstate gain; threshold current measurement; transparency; ultrafast differential transmission spectroscopy; Current measurement; Gain measurement; Measurement by laser beam; Optical variables measurement; Optical waveguides; Quantum dots; Semiconductor device measurement;
Conference_Titel :
Lasers and Electro-Optics (CLEO), 2013 Conference on
Conference_Location :
San Jose, CA
