Ultrafast polarization modulation in vertical cavity surface emitting lasers with frequency dependent current injection
نویسندگان
چکیده
We report on a polarization modulation in vertical cavity surface emitting lasers (VCSEL), based on RF electrical injection. Complex polarization dynamics in the single mode regime is studied as a function of RF frequency and power at different bias currents. It has been observed that the polarization state of the VCSEL can be altered by changing the frequency of RF current modulation. Time resolved measurements show that by injecting periodic bursts of RF modulation in the VCSEL, it is possible to change the dominant polarization between the two orthogonal modes at gigahertz rates. VC 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4772540]
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