Skip to main content
Vai all'homepage della Commissione europea (si apre in una nuova finestra)
italiano it
CORDIS - Risultati della ricerca dell’UE
CORDIS
Contenuto archiviato il 2024-05-27

Screening and packaging techniques for highly reliable laser-bars for telecommunication and industrial applications

Obiettivo

The aim of the project is to develop high power/high reliability near-IR diode laser bars to address the needs of both telecommunication and industrial markets in terms of lifetime and cost per watt. Material defects, thermal management and mechanical stresses are now main critical issues, which need to be solved to achieve higher reliability and higher output power from potentially efficient bars. This project addresses these critical issues by developing an industrial methodology to screen high performance laser bars (at 980nm and 808nm), combined with an advanced stress-free bar packaging on expansion-matched micro-channel coolers. The main objective is to demonstrate a reliable (2000h) 100W-CW bar. The achievement of this performance is expected to give a strong impact on reliability at reduced power levels: a projected lifetime, acceptable by the telecommunication market, of 100000 h is expected from 20/30W-CW bars at 980nm.

Objectives:
This project covers the R&D of the future generation of near-IR high-power/high reliability laser-bars for telecommunication and industrial applications. It is based on the development of industrial screening tools and advanced packaging technologies able to efficiently select, mount and cool high performance bars on optimum coolers. Based on non-destructive photo-current and photo-luminescence spectroscopies, an industrial screening methodology will be designed in order to select high quality sources of bars and to monitor the optimisation of the different packaging steps (soldering, bonding, burn-in). The development of new expansion-matched micro-channels coolers and the associated soldering process will be another major issue of this work. The expected result o is a reliable (2000h) 100W-CW bar and a projected lifetime for 980nm 20/30W bars of 100000 h.

Work description:
The aim of the work is to develop the future generation of high-power/high reliability diode-laser-bars by combining advanced screening methodologies with the new expansion-matched micro-channel heat-sinks. Different non-destructive screening techniques based on optical spectroscopies will be developed and used to screen different material sources of high performance laser bars, including Al-free materials. Advanced micro-photoluminescence techniques will be used for mapping the defect and strain on the output facets which are known to influence laser degradation and reliability. Photo-current spectroscopy and the derived "laser beam induced current" technique will be investigated as complementary or alternative methods. New expansion-matched Cu micro-channel coolers will be developed for stress-free bar-packaging.

Two innovative solutions will be considered:
i) integration of a low expansion metal sheet into the micro-channel assembly,
ii) integration of a copper-tungsten bar-submount on the top of the micro-channel assembly.

Monitored by the stress-sensitive spectroscopic techniques developed in the project, soldering processes based on hard-solder (Au-Sn) and soft solder(In) will be optimised to reach the "stress-free condition". Micro-Raman spectroscopy and direct thermal imaging with an IR camera will be used to assess the quality of the solder joint and the performance of the heat-sink, while the laser is operating. To establish correlations between reliability and packaging-induced stress and to produce ageing models suitable for bars operating up to 30mW/µm, ageing tests (1000-2000h) will be carried out. Standard reliability analysis methods will be applied to the degradation and ageing data. Laser degradation and failure modes will be physically investigated on the aged bars mainly by cathodo-luminescence and photo-luminescence microscopy.

Milestones:
M6: Qualification of optical spectroscopy methods for bar screening.
M12: Assessment of the strain measurement methodology.
M15: Advanced expansion-matched heat-sinks available.
M21: Reduction of stress level in mounted bars by a factor of 2.
M24: Packaged bars for 100W-CW application available for lifetime testing
M27: Reliability at 100W-CW > 2000h. Extrapolated lifetime at 20/30W-CW higher than 100000 h (980nm).

Campo scientifico (EuroSciVoc)

CORDIS classifica i progetti con EuroSciVoc, una tassonomia multilingue dei campi scientifici, attraverso un processo semi-automatico basato su tecniche NLP. Cfr.: Il Vocabolario Scientifico Europeo.

È necessario effettuare l’accesso o registrarsi per utilizzare questa funzione

Programma(i)

Programmi di finanziamento pluriennali che definiscono le priorità dell’UE in materia di ricerca e innovazione.

Argomento(i)

Gli inviti a presentare proposte sono suddivisi per argomenti. Un argomento definisce un’area o un tema specifico per il quale i candidati possono presentare proposte. La descrizione di un argomento comprende il suo ambito specifico e l’impatto previsto del progetto finanziato.

Invito a presentare proposte

Procedura per invitare i candidati a presentare proposte di progetti, con l’obiettivo di ricevere finanziamenti dall’UE.

Dati non disponibili

Meccanismo di finanziamento

Meccanismo di finanziamento (o «Tipo di azione») all’interno di un programma con caratteristiche comuni. Specifica: l’ambito di ciò che viene finanziato; il tasso di rimborso; i criteri di valutazione specifici per qualificarsi per il finanziamento; l’uso di forme semplificate di costi come gli importi forfettari.

CSC - Cost-sharing contracts

Coordinatore

THALES
Contributo UE
Nessun dato
Indirizzo
45 Rue De Villiers
92200 Neuilly Sur Seine
Francia

Mostra sulla mappa

Costo totale

I costi totali sostenuti dall’organizzazione per partecipare al progetto, compresi i costi diretti e indiretti. Questo importo è un sottoinsieme del bilancio complessivo del progetto.

Nessun dato

Partecipanti (6)

Il mio fascicolo 0 0