Dynamic laser control using feedback from a gain grating

We demonstrate that self-induced gain gratings can provide nonlinear optical feedback that results in single frequency selection and passive self Q-switching of a conventional linear laser cavity. An experimental Nd:YAG laser system is described that yields a temporally-smooth 20 ns pulse at 1.064 /...

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Bibliographic Details
Published in:IEEE journal of quantum electronics 1996-03, Vol.32 (3), p.371-377
Main Authors: Green, R.P.M., Crofts, G.J., Hubbard, W., Udaiyan, D., Dong Hwan Kim, Damzen, M.J.
Format: Article
Language:English
Subjects:
Beam characteristics: profile, intensity, and power
spatial pattern formation
Doped-insulator lasers and other solid state lasers
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Gratings
Laser feedback
Laser modes
Laser optical systems: design and operation
Lasers
Nonlinear optics
Optical control
Optical coupling
Optical distortion
Optical feedback
Optical resonators
Optical scattering
Optics
Physics
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Description
Summary:We demonstrate that self-induced gain gratings can provide nonlinear optical feedback that results in single frequency selection and passive self Q-switching of a conventional linear laser cavity. An experimental Nd:YAG laser system is described that yields a temporally-smooth 20 ns pulse at 1.064 /spl mu/m. In addition, we show that the feedback has phase-conjugate properties that permit "flower-like" mode formation even though the azimuthal symmetry of the cavity is broken.
ISSN:0018-9197
1558-1713
DOI:10.1109/3.485385