Fabrication and packaging for high-Q CaF2 crystalline resonators with modal modification

Mengyu Wang; Yu Yang; Lingjun Meng; Xueying Jin; Yongchao Dong; Lei Zhang; Wenbin Xu; Keyi Wang

doi:10.3788/COL201917.111401

Journals >Chinese Optics Letters >Volume 17 >Issue 11 >Page 111401 > Article

Chinese Optics Letters
Vol. 17, Issue 11, 111401 (2019)

Fabrication and packaging for high-Q CaF₂ crystalline resonators with modal modification

Mengyu Wang¹, Yu Yang¹, Lingjun Meng¹, Xueying Jin², Yongchao Dong³, Lei Zhang^1、*, Wenbin Xu⁴, and Keyi Wang^1、**

Author Affiliations

¹Department of Precision Machinery and Precision Instrumentation, University of Science and Technology of China, Hefei 230027, China

²School of Instrument Science and Technology, Hefei University of Technology, Hefei 230009, China

³School of Electromechanical Engineering, Guangdong University of Technology, Guangzhou 510643, China

⁴Science and Technology on Optical Radiation Laboratory, Beijing 100039, China

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DOI: 10.3788/COL201917.111401 Cite this Article Set citation alerts

Mengyu Wang, Yu Yang, Lingjun Meng, Xueying Jin, Yongchao Dong, Lei Zhang, Wenbin Xu, Keyi Wang. Fabrication and packaging for high-Q CaF₂ crystalline resonators with modal modification[J]. Chinese Optics Letters, 2019, 17(11): 111401 Copy Citation Text

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Schematic drawing of the method of fabricating the designed CaF2 disk resonator.

Fig. 1. Schematic drawing of the method of fabricating the designed

{CaF}_{2}

disk resonator.

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Fig. 2. Schematic of the experiment setup for the full polishing system for the

{CaF}_{2}

disk resonator. The customized machining system is used to manufacture the disks together with the circulation system, the air-supply system, and the servo system.

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Fig. 3. (a), (b) Experimental photograph of the

{CaF}_{2}

disk resonator after grinding and polishing. The diameter

d = 10.5 mm

of the disk resonator after polishing. (c)–(e) The simulated light-field distribution of the disk resonator with thickness

h = 1 mm

for the transverse electric (TE) mode.

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Fig. 4. (a) Measured Newton fringes periodicity for

{CaF}_{2}

disk resonator after polishing. (b) Three-dimensional profile of surface roughness in the detection vision-field size. (c) The surface roughness along the detected

y

axis direction.

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Fig. 5. (a) Schematic of the experimental setup used for measuring the resonance of the

{CaF}_{2}

disk resonator. PD is photodetector. (b) The

{CaF}_{2}

disk resonator after polishing. (c), (d) Experimental photographs of the coupling system for the disk resonator and the tapered fiber.

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Fig. 6. Drawing of the packaged disk-taper coupling system in a sealed hard disk. The red arrows illustrate flexible degrees of freedom in the customized mechanical component.

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Fig. 7. Transmission spectra of disk-taper coupling system (a) before packaging and (b) after packaging.

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