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COMPOUND WAVEGUIDE STRUCTURES FOR EFFICIENT FREQUENCY DOUBLING IN DIODE PUMPED SHORT WAVELENGTH MICROLASERS

Objective

The aim of the project is to fabricate two different prototypes of intense (2 W; continuous wave) coherent light sources at a wavelength of 532 nm.

The principle of both prototypes is the same, but the two devices differ in the materials used (KTP crystals and polymers) for second harmonic generation and the corresponding technology. In the devices, the second harmonic light is the result of lasing inside a cavity in the presence of diode pumped (10-20 Watt) Nd:YAG crystals. The cavity acts as such for the fundamental light only, and is built by selective mirrors, based on stacks of dielectric layers. Mode selection of the lasing mode at the fundamental frequency is accomplished by using an aperture or, in a later stage, a computer generated hologram.

The production of the two prototypes consists of the following steps:

- design of waveguiding structures that show both good modal field overlap and phase-matching;
- accurate production of the designed waveguides, including careful polishing and layer deposition;
- characterisation and optimisation of waveguides;
- production of complete devices for both prototypes;
- characterisation and optimisation of devices;
- commercial follow up.

Funding Scheme

CSC - Cost-sharing contracts

Coordinator

UNIVERSITY OF TWENTE
Address
5,Drienarlo Laan
7522 NB Enschede
Netherlands

Participants (3)

CeramOptec GmbH
Germany
Address
Siemensstrasse 44
53121 Bonn
INSTITUTE OF RADIO ENGINEERING AND ELECTRONICS
Czechia
Address
57,Chaberska
182 51 Praha
R&D FIRM IOFAN-INFO LTD
Russia
Address
38,Vavilov Street
117942 Moscow