Reducing Brownian motion in an electrostatically tunable MEMS laser

@article{Huber2004ReducingBM,
  title={Reducing Brownian motion in an electrostatically tunable MEMS laser},
  author={Dawn Heather Huber and Paul L. Corredoura and Susan Lester and V. Robbins and Linda Kamas},
  journal={Journal of Microelectromechanical Systems},
  year={2004},
  volume={13},
  pages={732-736}
}
Brownian motion of a tunable vertical-cavity surface-emitting lasers (VCSEL) movable microelectromechanical systems (MEMS) mirror is shown to broaden the spectral width of the laser emission line. A low-noise wavelength feedback system is presented and evaluated. This feedback system is employed to reduce measured linewidth from 1050 to 400 MHz fullwidth at half-maximum (FWHM), an improvement of 62%. The effects of device design parameters on closed-loop Brownian motion levels are analyzed. The… CONTINUE READING

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