公开(公告)号：WO2018044363A3

公开(公告)日：2018-03-08

申请号：PCT/US2017/032088

申请日：2017-05-11

Applicant: MASSACHUSETTS INSTITUTE OF TECHNOLOGY

Inventor： SHTYRKOVA, Katia ,  KAERTNER, Franz X. ,  CALLAHAN, Patrick T. ,  WATTS, Michael R. ,  IPPEN, Erich P.

IPC: H01S3/05 ,  G01J4/00 ,  H01S3/04 ,  H01S3/08 ,  H01S3/098 ,  H01S3/10

Abstract: An artificial saturable absorber uses additive pulse mode-locking to enable pulse operation of an on-chip laser operation. Four different artificial saturable absorbers are disclosed. The first includes an integrated coupler, two arms each containing some implementation of the end-reflector, and a phase bias element in one arm. The second includes an integrated directional coupler, two integrated waveguide arms, and another integrated coupler as an output. The third includes an integrated birefringent element, integrated birefringent-free waveguide, and integrated polarizer. And the fourth includes a multimode waveguide that allows for different modes to propagate in such a way that the difference in the spatial distribution of intensity causes a nonlinear phase difference between the modes. These are just some examples of an on-chip fully integrated artificial saturable absorber with instantaneous recovery time that allow for generation of sub-femtosecond optical pulses at high repetition rates using passive mode-locking.

公开(公告)号：WO2018044363A2

公开(公告)日：2018-03-08

申请号：PCT/US2017/032088

申请日：2017-05-11

Applicant: MASSACHUSETTS INSTITUTE OF TECHNOLOGY

Inventor： SHTYRKOVA, Katia ,  KAERTNER, Franz X. ,  CALLAHAN, Patrick T. ,  WATTS, Michael R. ,  IPPEN, Erich P.

IPC: H01S3/05

CPC classification number: H01S5/0657 ,  H01S3/0637 ,  H01S3/08054 ,  H01S3/082 ,  H01S3/1112 ,  H01S3/1616 ,  H01S3/1636 ,  H01S5/02453 ,  H01S5/026 ,  H01S5/041 ,  H01S5/042 ,  H01S5/0604 ,  H01S5/06236 ,  H01S5/06246 ,  H01S5/06251 ,  H01S5/0651 ,  H01S5/1007

Abstract: An artificial saturable absorber uses additive pulse mode-locking to enable pulse operation of an on-chip laser operation. Four different artificial saturable absorbers are disclosed. The first includes an integrated coupler, two arms each containing some implementation of the end-reflector, and a phase bias element in one arm. The second includes an integrated directional coupler, two integrated waveguide arms, and another integrated coupler as an output. The third includes an integrated birefringent element, integrated birefringent-free waveguide, and integrated polarizer. And the fourth includes a multimode waveguide that allows for different modes to propagate in such a way that the difference in the spatial distribution of intensity causes a nonlinear phase difference between the modes. These are just some examples of an on-chip fully integrated artificial saturable absorber with instantaneous recovery time that allow for generation of sub-femtosecond optical pulses at high repetition rates using passive mode-locking.

Abstract translation: 人工可饱和吸收体使用附加脉冲模式锁定来启用片上激光器操作的脉冲操作。 公开了四种不同的人工可饱和吸收体。 第一个包括一个集成的耦合器，两个臂，每个臂都包含一些端部反射器，以及一个臂中的相位偏置元件。 第二个包括一个集成定向耦合器，两个集成波导臂和另一个集成耦合器作为输出。 第三种包括集成双折射元件，集成双折射波导和集成偏振器。 第四个包括一个多模波导，它允许不同的模式以这样的方式传播，即强度的空间分布的差异导致模式之间的非线性相位差。 这些仅仅是片上完全集成的人工可饱和吸收体的一些例子，具有瞬间恢复时间，允许使用被动模式锁定以高重复率产生亚飞秒光脉冲。