公开(公告)号：US10389087B2

公开(公告)日：2019-08-20

申请号：US15543691

申请日：2016-01-25

Applicant: UNIVERSITY OF ROCHESTER

Inventor： Jordan P. Leidner ,  John R. Marciante

IPC: H01S5/00 ,  H01S5/14 ,  H01S5/40 ,  H01S5/068 ,  H01S3/067 ,  H01S3/094 ,  H01S3/0941 ,  H01S5/20

Abstract: Methods and apparatus for spectral narrowing and wavelength stabilization of broad-area lasers, such as an apparatus including a broad-area laser source configured to emit light along an emission axis in an emission pattern extending along the emission axis, and a single-mode fiber Bragg grating, such as a single-mode core incorporating a fiber Bragg grating embedded in a core of a dual-clad fiber, the single-mode fiber Bragg grating configured to spectrally selectively reflect back light from a sub-aperture portion of the emitted light to the broad-area laser source. The single mode core having the FBG is off-axis in comparison to the central axis of the double-clad fiber and allows for frequency stabilization of the broad area laser diode output improving its performance as pump laser for a doped fiber amplifier.

公开(公告)号：US11081851B2

公开(公告)日：2021-08-03

申请号：US16318396

申请日：2017-07-20

Applicant: University of Rochester

Inventor： John R. Marciante ,  Jordan P. Leidner

IPC: H01S3/067 ,  H01S3/16 ,  G02B6/028 ,  G02B6/02

Abstract: An optical fiber, such as in some instances a high-power, diode-pumped, dual-clad, ytterbium-doped fiber amplifier (YDFAs), having a fundamental mode and at least one higher order mode, wherein the higher order mode or modes have mode areas that are substantially larger than a mode area of the fundamental mode.

公开(公告)号：US10164398B2

公开(公告)日：2018-12-25

申请号：US15513228

申请日：2015-09-22

Applicant: University of Rochester

Inventor： John R. Marciante ,  Haomin Yao

IPC: H01S3/30 ,  H01S3/067 ,  H01S3/094 ,  H01S3/16

Abstract: Laser signal intensity is resonantly enhanced within a laser cavity to be greater than a pump intensity. This enables the suppression of excited-state absorption and is applicable to terbium-doped fiber lasers, lambda-type materials, or other materials used in lasers. In other embodiments, ESA is suppressed by de-populating the higher excited state using a resonant cavity.

公开(公告)号：US20190288474A1

公开(公告)日：2019-09-19

申请号：US16318396

申请日：2017-07-20

Applicant: University of Rochester

Inventor： John R. Marciante ,  Jordan P. Leidner

IPC: H01S3/067 ,  H01S3/16

Abstract: An optical fiber, such as in some instances a high-power, diode-pumped, dual-clad, ytterbium-doped fiber amplifier (YDFAs), having a fundamental mode and at least one higher order mode, wherein the higher order mode or modes have mode areas that are substantially larger than a mode area of the fundamental mode.

公开(公告)号：US20180246339A1

公开(公告)日：2018-08-30

申请号：US15755276

申请日：2016-09-12

Applicant: UNIVERSITY OF ROCHESTER

Inventor： John R. Marciante

IPC: G02B27/48 ,  H01S3/16 ,  H01S3/08 ,  H01S3/067 ,  H01S3/06 ,  H01S3/23 ,  H01S3/094 ,  H01S3/0941

CPC classification number: G02B27/48 ,  G02B27/22 ,  G03B21/2013 ,  G03B21/2033 ,  H01S3/0407 ,  H01S3/042 ,  H01S3/0602 ,  H01S3/0621 ,  H01S3/0623 ,  H01S3/06737 ,  H01S3/0675 ,  H01S3/08009 ,  H01S3/08027 ,  H01S3/08063 ,  H01S3/08086 ,  H01S3/094007 ,  H01S3/0941 ,  H01S3/1605 ,  H01S3/1655 ,  H01S3/2391 ,  H01S2301/04

Abstract: Methods and apparatus for producing high power lasers with reduced speckle are provided. Fiber and solid-state lasers comprising terbium-doped lasing material are provided. Embodiments are described for increasing signal reflection bandwidth, reducing coupling and coherency of spatial modes, and equalizing gain of terbium-doped lasers for use in laser display systems. Spectral selectors are described for generating separate wavelengths within a range of interest for use in 3D laser display systems.