通过飞秒激光微加工制造的光纤回音壁模式谐振器。

In-fiber whispering-gallery-mode resonator fabricated by femtosecond laser micromachining.

作者信息

Shi Leilei, Zhu Tao, Huang Dongmei, Liu Min, Deng Ming, Huang Wei

出版信息

Opt Lett. 2015 Aug 15;40(16):3770-3. doi: 10.1364/OL.40.003770.

DOI:10.1364/OL.40.003770

Abstract

An in-fiber whispering-gallery-mode resonator fabricated by femtosecond laser micromachining is demonstrated. The cylinder resonator cavity is fabricated by scanning the D-fiber cladding with infrared femtosecond pulses along a cylindrical trace with a radius of 25 μm and height of 20 μm. Quality factor on the order of 10(3) is achieved by smoothing the cavity surface with an ultrasonic cleaner, which is mainly limited by the surface roughness of several hundred nanometers. Resonant characteristics and polarization dependence of the proposed resonator are also studied in detail. Our method takes a step forward in the integration of whispering-gallery-mode resonators.

摘要

展示了一种通过飞秒激光微加工制造的光纤内回音壁模式谐振器。通过用红外飞秒脉冲沿着半径为25μm、高度为20μm的圆柱形轨迹扫描D型光纤包层来制造圆柱谐振腔。通过用超声波清洗器对腔表面进行平滑处理，实现了10(3)量级的品质因数，其主要受几百纳米的表面粗糙度限制。还详细研究了所提出谐振器的谐振特性和偏振依赖性。我们的方法在回音壁模式谐振器的集成方面向前迈进了一步。