Global Patent Index - EP 2020062 A2

EP 2020062 A2 2009-02-04 - HIGH POWER AMPLIFIER SILICA GLASS MATERIAL

Title (en)

HIGH POWER AMPLIFIER SILICA GLASS MATERIAL

Title (de)

HOCHLEISTUNGSVERSTÄRKER-SILICA-GLASMATERIAL

Title (fr)

MATÉRIAU DE VERRE DE SILICE AMPLIFICATEUR HAUTE PUISSANCE

Publication

EP 2020062 A2 (EN)

Application

EP 07722688 A

Priority

  • DK 2007050033 W
  • DK PA200600446 A
  • US 78637406 P

Abstract (en)

[origin: WO2007110081A2] A high power amplifier silica glass material is provided wherein photo darkening due to high optical flux is reduced considerably. The conventional counter part amplifier and laser based on conventional silica glass material have a problem in that their characteristics are deteriorated with the elapse of time due to photo darkening. The new fibre amplifier and laser silica glass material shows through reduction of the non-binding oxygen electron concentration less photo darkening. This is achieved through hydrogen or deuterium load of the amplifier glass material or by co-doping with phosphorous P<SUB>4</SUB>O<SUB>8-x</SUB>(OH)<SUB>4+2x</SUB>, (0 x 2).

IPC 8 full level (invention and additional information)

H01S 3/067 (2006.01)

CPC (invention and additional information)

H01S 3/06716 (2013.01); H01S 3/1618 (2013.01); H01S 3/1691 (2013.01); H01S 3/176 (2013.01)

Citation (search report)

See references of WO 2007110081A3

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR

Designated extension state (EPC)

AL BA HR MK RS

EPO simple patent family

WO 2007110081 A2 20071004; WO 2007110081 A3 20071115; EP 2020062 A2 20090204

INPADOC legal status


2010-04-14 [18D] APPLICATION DEEMED TO BE WITHDRAWN

- Effective date: 20091013

2009-04-29 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20090331

2009-02-04 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20080930

2009-02-04 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A2

- Designated State(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR

2009-02-04 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO:

- Countries: AL BA HR MK RS