title: Magic mode switching in Yb:CaGdAlO4 laser under high pump power.
abstract: We present unique spatial-mode switching in a cw Yb:CALGO laser when pumped at a multihundred-watts power level. It permits us to automatically stabilize to a TEM(00) mode from a highly spatial multimode regime. This stabilization is achievable thanks to polarization-mode switching allowed by the particular spectroscopic and thermal properties of Yb:CALGO crystal. This atypical and unexpected behavior is studied in detail in this Letter and explained by analysis of the thermo-optical coefficients for CALGO.
authors: Frédéric
authors: F
authors: Druon
authors: Mickaël
authors: M
authors: Olivier
authors: Anaël
authors: A
authors: Jaffrès
authors: Pascal
authors: P
authors: Loiseau
authors: Nicolas
authors: N
authors: Aubry
authors: Julien
authors: J
authors: DidierJean
authors: François
authors: F
authors: Balembois
authors: Bruno
authors: B
authors: Viana
authors: Patrick
authors: P
authors: Georges