Abstract: A tunable laser system includes a laser diode producing a light beam having a plurality of frequencies in a visible portion of a light spectrum. A collimating lens arranged in front of the laser diode produces a collimated light beam from the light beam produced by the laser diode. A partial reflector arranged in a path of the collimated laser beam reflects a first portion of the collimated light beam and passes a second portion of the collimated light beam as an output light beam. The first portion of the collimated light beam enters the laser diode and mixes with the plurality of frequencies of the light beam produced by the laser diode so that the laser diode produces a self-injection-locked light beam including at least two frequencies having a frequency difference in a terahertz frequency range. A translational stage adjusts a distance between the laser diode and the partial reflector. The laser diode or the partial reflector is mounted on the translational stage.

Abstract: A system and methods are drawn to a self-injection locked tunable laser using an InGaN/GaN gain chip to produce precise laser output at visible wavelengths. An external cavity length is adjusted by motorized stage to tune a resonance frequency of the external cavity to match the resonance frequency of the laser and self-injection lock the mode of the wavelength. Fine tuning is provided by adjusting the tilt angle of the partially reflective mirror. The laser diode may be operated at a range of injection currents and temperatures and provides precise control of output laser wavelengths and linewidths.

Abstract: A system and methods are drawn to a self-injection locked tunable laser using an InGaN/GaN gain chip to produce precise laser output at visible wavelengths. An external cavity length is adjusted by motorized stage to tune a resonance frequency of the external cavity to match the resonance frequency of the laser and self-injection lock the mode of the wavelength. Fine tuning is provided by adjusting the tilt angle of the partially reflective mirror. The laser diode may be operated at a range of injection currents and temperatures and provides precise control of output laser wavelengths and linewidths.

Abstract: A method of attributing contribution to a creation of time-constrained video content, includes: identifying a combination of content included in a time-constrained video created by a first creator, the combination of content including a plurality of items of content including at least a first item of content created by a second creator; determining an identification of the first creator and an identification of the second creator; associating the identification of the first creator and an identification of the second creator with the time-constrained video; and displaying the identification of the first creator and the identification of the second creator when the time-constrained video is displayed.

Abstract: A distributed computing system achieves a highly distributed environment where very large computation intensive tasks are broken down into thousands of sub-tasks and then distributed to thousands of clients running on a variety of computers across the Internet. The idle CPU time of each of these thousands of client computers is used to perform these computations by running custom application modules in a low priority. A task server keeps track of information associated with each of the clients and uses the information to assign one or more tasks associated with a computing problem to each client computer. A file server provides the application modules to the client computers for executing their assigned tasks. An application server provides input data for the application modules and receives output data from the application modules. Status and performance information for machines, accounts and teams is collected by the task server and displayed on a background page of each client.