公开(公告)号：EP2201415B1

公开(公告)日：2019-07-03

申请号：EP08798892.9

申请日：2008-08-28

Applicant: Imra America, Inc.

Inventor： DONG, Liang ,  LI, Jun ,  MCKAY, Hugh ,  FU, Libin ,  MARCINKEVICIUS, Andrius

IPC: G02B6/02 ,  G02B6/14 ,  H01S3/067

公开(公告)号：EP2374034A1

公开(公告)日：2011-10-12

申请号：EP09831150.9

申请日：2009-12-03

Applicant: Imra America, Inc.

Inventor： DONG, Liang ,  FERMANN, Martin, E. ,  MCKAY, Hugh ,  FU, Libin ,  SUZUKI, Shigeru

IPC: G02B6/00

CPC classification number: H01S3/175 ,  C03C13/046 ,  G02B6/02347 ,  G02B6/02366 ,  G02B6/02371 ,  G02B6/036 ,  G02B2006/12038 ,  G02B2006/1209 ,  H01S3/06716 ,  H01S3/1603 ,  H01S3/1616 ,  H01S3/1618 ,  H01S3/163 ,  H01S3/1691 ,  H01S3/1693 ,  H01S3/176 ,  H01S2301/03 ,  H04B10/2507

Abstract: Various embodiments described herein comprise a laser and/or an amplifier system including a doped gain fiber (1404) having ytterbium ions in a phosphosilicate glass. Various embodiments described herein increase pump absorption to at least about 1000 dB/m - 9000 dB/m. The use of these gain fibers provide for increased peak -powers and/or pulse energies. The various embodiments of the doped gain fiber (1404) having ytterbium ions in a phosphosilicate glass exhibit reduced photo-darkening levels compared to photo-darkening levels obtainable with equivalent doping levels of an ytterbium doped silica fiber.

公开(公告)号：EP1846784B1

公开(公告)日：2016-07-20

申请号：EP05856000.4

申请日：2005-12-30

Applicant: Imra America, Inc.

Inventor： DONG, Liang ,  PENG, Xiang

IPC: G02B6/02 ,  C03B37/012 ,  G01N21/65 ,  G01N21/77 ,  G02B6/42

CPC classification number: G01N21/65 ,  C03B37/01205 ,  C03B37/01208 ,  C03B37/0122 ,  C03B2203/04 ,  C03B2203/12 ,  C03B2203/14 ,  C03B2203/16 ,  C03B2203/42 ,  G01N21/774 ,  G01N2021/655 ,  G02B6/02238 ,  G02B6/023 ,  G02B6/02304 ,  G02B6/02328 ,  G02B6/02338 ,  G02B6/02347 ,  G02B6/02357 ,  G02B6/02361 ,  G02B6/4206

公开(公告)号：EP1846784A2

公开(公告)日：2007-10-24

申请号：EP05856000.4

申请日：2005-12-30

Applicant: Imra America, Inc.

Inventor： DONG, Liang ,  PENG, Xiang

IPC: G02B6/02

CPC classification number: G01N21/65 ,  C03B37/01205 ,  C03B37/01208 ,  C03B37/0122 ,  C03B2203/04 ,  C03B2203/12 ,  C03B2203/14 ,  C03B2203/16 ,  C03B2203/42 ,  G01N21/774 ,  G01N2021/655 ,  G02B6/02238 ,  G02B6/023 ,  G02B6/02304 ,  G02B6/02328 ,  G02B6/02338 ,  G02B6/02347 ,  G02B6/02357 ,  G02B6/02361 ,  G02B6/4206

Abstract: Included among the many structures described herein are photonic bandgap fibers (100) designed to provide a desired dispersion spectrum. Additionally, designs for achieving wide transmission bands and lower transmission loss are also discussed. For example, in some fiber designs (100), smaller dimensions of high index material in the cladding (104) and large core size (102) provide small flat dispersion over a wide spectral range. In other examples, the thickness of the high index ring-shaped region closest to the core has sufficiently large dimensions to provide negative dispersion or zero dispersion at a desired wavelength. Additionally, low index cladding (104) features distributed along concentric rings or circles (306) may be used for achieving wide bandgaps.