Skip to Main content Skip to Navigation
Theses

Lasers guides d'onde dans le niobate de lithium dopé erbium

Abstract : Taking advantage of the combination of the lasing properties of rare earth ions with electrooptic behavior in erbium-doped lithium niobate can be particularly rewarding in a single-mode waveguide configuration, where the high energy confinement increases the laser gain and allows for the realization of high speed electro-optic components with low driving voltage, thus promising high peak power Q-switched lasers.
Toward this goal, a concentration-related gain reduction mechanism, adapted to bulk-doped crystals has been identified and a new method developed to simply evaluate its effects.
The corresponding modeling of optical amplification, described in the case of waveguides, is in good agreement with measurements carried out after titanium stripes indiffusion in various substrates, including erbium-indiffused ones.
This led to the first demonstration of laser action in erbium-doped lithium niobate waveguides pumped by a 1.48 µm diode. The further integration of electrooptic modulators also enabled to Q-switch the continuous wave lasers. Whereas the currently available pump power limits the pulses, predictions indicate future peak powers of several hundreds of watts and durations of a few nanoseconds.
Complete list of metadatas

Cited literature [76 references]  Display  Hide  Download

https://tel.archives-ouvertes.fr/tel-00089120
Contributor : Arnaud Grisard <>
Submitted on : Thursday, August 10, 2006 - 12:17:21 PM
Last modification on : Wednesday, November 29, 2017 - 3:53:07 PM
Long-term archiving on: : Tuesday, April 6, 2010 - 12:34:00 AM

Identifiers

  • HAL Id : tel-00089120, version 1

Citation

Arnaud Grisard. Lasers guides d'onde dans le niobate de lithium dopé erbium. Physique Atomique [physics.atom-ph]. Université Nice Sophia Antipolis, 1997. Français. ⟨tel-00089120⟩

Share

Metrics

Record views

261

Files downloads

1437