Global Patent Index - EP 1240696 A2

EP 1240696 A2 2002-09-18 - WIDE RIDGE PUMP LASER

Title (en)

WIDE RIDGE PUMP LASER

Title (de)

BREITSTREIFIGER PUMPLASER

Title (fr)

POMPE LASER A LARGE MOULURE

Publication

EP 1240696 A2 (EN)

Application

EP 00992925 A

Priority

  • US 0042790 W
  • US 46697399 A
  • US 47769500 A

Abstract (en)

[origin: WO0147076A2] A laser pump module has a ridge waveguide chip with a ridge width that is greater than 4 micrometers ( mu m). This is a relatively wide ridge for this class of laser chips. Specifically, especially for signal lasers, narrow ridge widths are used in order to control lateral and transverse mode shape and size. In the present invention, however, where a chhip is used for pump applications, a wider ridge is used to increase the laser effective gain volume and decrease the loss associated with the lowest order transverse mode to thus maximize the useful power and light that is coupled into the fiber.

IPC 1-7 (main, further and additional classification)

H01S 5/022; G02B 6/42

IPC 8 full level (invention and additional information)

G02B 6/42 (2006.01); H01S 5/22 (2006.01); G02B 6/30 (2006.01); H01S 3/0941 (2006.01); H01S 5/022 (2006.01); H01S 5/10 (2006.01); H01S 5/14 (2006.01); H01S 5/20 (2006.01); H01S 5/223 (2006.01)

CPC (invention and additional information)

G02B 6/4203 (2013.01); H01S 5/22 (2013.01); G02B 6/30 (2013.01); G02B 6/4204 (2013.01); H01S 3/09415 (2013.01); H01S 5/02216 (2013.01); H01S 5/02284 (2013.01); H01S 5/0267 (2013.01); H01S 5/0655 (2013.01); H01S 5/1064 (2013.01); H01S 5/147 (2013.01); H01S 5/2231 (2013.01)

Citation (search report)

See references of WO 0147076A3

Designated contracting state (EPC)

DE FR GB IT

EPO simple patent family

WO 0147076 A2 20010628; WO 0147076 A3 20020321; AU 4718101 A 20010703; CA 2395009 A1 20010628; CN 1411622 A 20030416; EP 1240696 A2 20020918; JP 2003518758 A 20030610

INPADOC legal status


2005-01-05 [18D] APPLICATION DEEMED TO BE WITHDRAWN

- Effective date: 20040701

2004-05-12 [RBV] DESIGNATED CONTRACTING STATES (CORRECTION)

- Designated State(s): DE FR GB IT

2002-09-18 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20020617

2002-09-18 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A2

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

2002-09-18 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO:

- Free text: AL;LT;LV;MK;RO;SI