公开(公告)号：US20140111671A1

公开(公告)日：2014-04-24

申请号：US14110937

申请日：2012-04-16

Applicant: Hui Cao ,  Brandon Redding ,  Michael Choma

Inventor： Hui Cao ,  Brandon Redding ,  Michael Choma

IPC: H04N5/235 ,  H01S3/10

Abstract: Systems and methods are provided for imaging using complex lasers. In general, a complex laser may be used as an electromagnetic source for an imaging application. The use of a lower spatial coherence configured complex laser in imaging applications may advantageously mitigate coherent artifacts in imaging such as cross-talk and speckle and improve overall image quality. Imaging applications where a complex laser may be useful include both incoherent imaging applications, such as digital light projectors and traditional microscopy, and coherent imaging applications, such as optical coherence tomography (OCT) and holography. The systems and methods provided also enable controlling the degree of spatial coherence of a complex laser.

Abstract translation: 提供了使用复合激光成像的系统和方法。 通常，复合激光器可以用作成像应用的电磁源。 在成像应用中使用配置复杂激光的较低的空间相干性可以有利地减轻成像中的相干伪影，例如串扰和散斑，并提高整体图像质量。 复合激光器可能有用的成像应用包括非相干成像应用，如数字光投影仪和传统显微镜，以及相干成像应用，如光学相干断层扫描（OCT）和全息术。 所提供的系统和方法还能够控制复杂激光器的空间相干性程度。

公开(公告)号：US10680401B2

公开(公告)日：2020-06-09

申请号：US15168981

申请日：2016-05-31

Applicant: Brandon Redding ,  Peyman Ahmadi ,  Martin Seifert ,  Hui Cao

Inventor： Brandon Redding ,  Peyman Ahmadi ,  Martin Seifert ,  Hui Cao

IPC: H01S3/16 ,  H01S3/094 ,  G02B27/48 ,  G01B11/14 ,  H01S3/00 ,  G01J3/02 ,  G02B6/02 ,  G01S17/00 ,  G01S7/481 ,  G01S7/4911 ,  G01J3/10 ,  G01J3/18 ,  H01S3/067

Abstract: The present disclosure relates more particularly to active optical fibers, amplified spontaneous emission (ASE) sources using such active optical fibers, and imaging and detection systems and methods using such ASE sources. In one aspect, the disclosure provides an active optical fiber that includes a rare earth-doped gain core configured to emit radiation at at least a peak wavelength emitted wavelength when pumped with pump radiation having a pump wavelength; a pump core surrounding the gain core; and a cladding surrounding the pump core, wherein the value M=16R2(NA)2/λ2 in which R is the gain core radius, NA is the active optical fiber numerical aperture, and λ is the peak emitted wavelength, is at least 50, or at least 100. The present disclosure also provides an optical source that includes the optical fiber coupled to a pump source.

公开(公告)号：US10432871B2

公开(公告)日：2019-10-01

申请号：US14110937

申请日：2012-04-16

Applicant: Hui Cao ,  Brandon Redding ,  Michael Choma

Inventor： Hui Cao ,  Brandon Redding ,  Michael Choma

IPC: G02B27/48 ,  H04N5/235 ,  H01S3/30 ,  H04N9/31 ,  H01S5/10 ,  H01S3/10 ,  H01S3/08 ,  H01S3/213 ,  H01S5/04

Abstract: Systems and methods are provided for imaging using complex lasers. In general, a complex laser may be used as an electromagnetic source for an imaging application. The use of a lower spatial coherence configured complex laser in imaging applications may advantageously mitigate coherent artifacts in imaging such as cross-talk and speckle and improve overall image quality. Imaging applications where a complex laser may be useful include both incoherent imaging applications, such as digital light projectors and traditional microscopy, and coherent imaging applications, such as optical coherence tomography (OCT) and holography. The systems and methods provided also enable controlling the degree of spatial coherence of a complex laser.

公开(公告)号：US20160352066A1

公开(公告)日：2016-12-01

申请号：US15168981

申请日：2016-05-31

Applicant: Brandon Redding ,  Peyman Ahmadi ,  Martin Siefert ,  Addi Hui Coag

Inventor： Brandon Redding ,  Peyman Ahmadi ,  Martin Siefert ,  Addi Hui Coag

IPC: H01S3/094 ,  G01J3/02 ,  H01S3/00 ,  G02B27/48 ,  H01S3/067 ,  H01S3/16

CPC classification number: H01S3/094007 ,  G01B11/14 ,  G01J3/0218 ,  G01J3/10 ,  G01J3/108 ,  G01J3/1895 ,  G01S7/4818 ,  G01S7/4911 ,  G01S17/00 ,  H01S3/0078 ,  H01S3/06729 ,  H01S3/1603 ,  H01S3/1618 ,  H01S2301/02

Abstract: The present disclosure relates more particularly to active optical fibers, amplified spontaneous emission (ASE) sources using such active optical fibers, and imaging and detection systems and methods using such ASE sources. In one aspect, the disclosure provides an active optical fiber that includes a rare earth-doped gain core configured to emit radiation at at least a peak wavelength emitted wavelength when pumped with pump radiation having a pump wavelength; a pump core surrounding the gain core; and a cladding surrounding the pump core, wherein the value M=16R2(NA)2/λ2 in which R is the gain core radius, NA is the active optical fiber numerical aperture, and λ is the peak emitted wavelength, is at least 50, or at least 100. The present disclosure also provides an optical source that includes the optical fiber coupled to a pump source.

Abstract translation: 本公开更具体地涉及使用这种有源光纤的有源光纤，放大的自发发射（ASE）源，以及使用这种ASE源的成像和检测系统和方法。 在一个方面，本发明提供了一种有源光纤，其包括稀土掺杂增益芯，其配置为当泵浦具有泵浦波长的泵浦辐射泵浦时以至少峰值波长发射波长发射辐射; 围绕增益芯的泵芯; 以及围绕泵芯的包层，其中R是增益芯半径的值M = 16R2（NA）2 /λ2，NA是有源光纤数值孔径，λ是峰值发射波长，为至少50 ，或至少为100.本公开还提供了包括耦合到泵浦源的光纤的光源。