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Signal amplification and control in optical cavities with off-axis feedback

AuthorsZambrini, Roberta ; Papoff, Francesco
Chirp modulation
Laser beams
Laser cavity resonators
Laser feedback
Laser stability
Laser tuning
Optical control
Issue Date9-Aug-2007
PublisherAmerican Physical Society
CitationPhysical Review Letters 99, 063907 (2007)
AbstractWe consider a large class of optical cavities and gain media with an off-axis external feedback which introduces a two-point nonlocality. This nonlocality moves the lasing threshold and opens large windows of control parameters where weak light spots can be strongly amplified while the background radiation remains very low. Furthermore, transverse phase and group velocities of a signal can be independently tuned and this enables to steer it non mechanically, to control its spatial chirping and to split it into two counter-propagating ones.
Description4 pages.-- PACS numbers: 42.65.Sf, 42.55.-f, 89.75.Kd.
Publisher version (URL)http://dx.doi.org/10.1103/PhysRevLett.99.063907
Appears in Collections:(IFISC) Artículos
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