公开(公告)号：US20160190769A1

公开(公告)日：2016-06-30

申请号：US15018824

申请日：2016-02-08

Applicant: CALIFORNIA INSTITUTE OF TECHNOLOGY

Inventor： Jiang LI ,  Hansuek LEE ,  Tong CHEN ,  Kerry VAHALA

IPC: H01S5/227 ,  H01S3/17 ,  H01S3/0941 ,  H01S5/10 ,  H01S3/30 ,  H01S3/094

CPC classification number: H01S5/2275 ,  H01S3/0632 ,  H01S3/083 ,  H01S3/094057 ,  H01S3/0941 ,  H01S3/176 ,  H01S3/30 ,  H01S5/1075 ,  H01S2301/02

Abstract: A highly-coherent chip-based laser generating system includes a disk resonator incorporating a wedge structure fabricated from a silicon dioxide layer of a chip. The disk resonator is operable to generate a highly-coherent laser from a low-coherence optical pump input provided at an optical power level as low as 60 μW. The disk resonator is fabricated with sub-micron cavity size control that allows generation of a highly-coherent laser using a controllable Stimulated Brillouin Scattering process that includes matching of a cavity free-spectral-range to a Brillouin shift frequency in silica. While providing several advantages due to fabrication on a chip, the highly-coherent laser produced by the disk resonator may feature a Schawlow-Townes noise level as low as 0.06 Hz2/Hz (measured with the coherent laser at a power level of about 400 μW) and a technical noise that is at least 30 dB lower than the low-coherence optical pump input.

公开(公告)号：US20150029579A1

公开(公告)日：2015-01-29

申请号：US14513058

申请日：2014-10-13

Applicant: CALIFORNIA INSTITUTE OF TECHNOLOGY

Inventor： Jiang LI ,  Hansuek LEE ,  Tong CHEN ,  Kerry VAHALA

IPC: G02F1/35

CPC classification number: G02F1/353 ,  G02F1/2257 ,  G02F2201/063 ,  G02F2201/17 ,  G02F2201/58 ,  G02F2202/09 ,  G02F2202/105 ,  G02F2203/15 ,  G02F2203/54 ,  G02F2203/56 ,  G02F2203/69

Abstract: A frequency comb generator fabricated on a chip with elimination of a disadvantageous reflow process, includes an ultra-high Q disk resonator having a waveguide that is a part of a wedge structure fabricated from a silicon dioxide layer of the chip. The disk resonator allows generation of a frequency comb with a mode spacing as low as 2.6 GHz and up to 220 GHz. A surface-loss-limited behavior of the disk resonator decouples a strong dependence of pumping threshold on repetition rate.

Abstract translation: 制造在芯片上的消除不利的回流工艺的频率梳发生器包括具有作为由芯片的二氧化硅层制成的楔形结构的一部分的波导的超高Q盘谐振器。 磁盘谐振器允许产生低至2.6GHz和高达220GHz的模式间隔的频率梳。 盘式谐振器的表面损耗受限行为使抽水阈值对重复率的强烈依赖性解耦。