Beam combination setup for dual-frequency laser with orthogonal linear polarization

Haijin Fu; Jiubin Tan; Pengcheng Hu; Zhigang Fan

doi:10.3788/COL201513.101201

Chinese Optics Letters, Volume. 13, Issue 10, 101201(2015)

Beam combination setup for dual-frequency laser with orthogonal linear polarization

Haijin Fu^1,2, Jiubin Tan¹, Pengcheng Hu^1、*, and Zhigang Fan²

Author Affiliations

¹Ultra-Precision Optoelectronic Instrument Engineering Center, Harbin Institute of Technology, Harbin 150001, China

²Postdoctoral Research Station of Optical Engineering, Harbin Institute of Technology, Harbin 150001, China

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Figures & Tables(10)

Fig. 1. Schematic diagram of a typical dual-frequency laser source based on acousto-optic modulation technology. FSC, frequency stabilization circuit; HW, half-wave plate.

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Fig. 2. Reflectivity curves of a PBS.

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Fig. 3. Beam combination with a single PBS.

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Fig. 4. Beam combination with two orthogonal PBSs.

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Fig. 5. Polarization state of a dual-frequency laser beam.

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Fig. 6. Experimental system for polarization measurement of a dual-frequency laser beam.

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Fig. 7. Normalized beat amplitude for (a) the conventional setup and (b) the improved setup.

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Fig. 8. Transmission laser intensity of PBS1 vs. angle error between polarizing axes of the two PBSs.

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Table 1. Extreme Values of Beat Amplitude and the Calculated Polarization Parameters (for conventional setup)

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Table 1. Extreme Values of Beat Amplitude and the Calculated Polarization Parameters (for conventional setup)

$P_{1}$	$V_{1}$	$P_{2}$	$V_{2}$	$ρ_{1} / \deg$	$ρ_{2} / \deg$	$β / \deg$
0.9990	0.0055	0.9527	0.0791	0.162	2.325	1.362
0.9970	0.0047	0.9630	0.0668	0.137	1.954	0.995
0.9980	0.0050	0.9626	0.0799	0.146	2.338	1.036
1.0000	0.0063	0.9483	0.0821	0.185	2.417	1.522
0.9990	0.0053	0.9602	0.0675	0.155	1.976	1.136

Table 2. Extreme Values of Beat Amplitude and the Calculated Polarization Parameters (for improved setup)

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Table 2. Extreme Values of Beat Amplitude and the Calculated Polarization Parameters (for improved setup)

$P_{1}$	$V_{1}$	$P_{2}$	$V_{2}$	$ρ_{1} / \deg$	$ρ_{2} / \deg$	$β / \deg$
0.9999	0.0053	0.9966	0.0047	0.152	0.135	0.095
0.9995	0.0045	0.9949	0.0049	0.129	0.141	0.132
1.0000	0.0047	0.9961	0.0058	0.135	0.167	0.112
0.9990	0.0061	0.9960	0.0047	0.175	0.135	0.086
0.9985	0.0063	0.9942	0.0056	0.181	0.154	0.124

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Haijin Fu, Jiubin Tan, Pengcheng Hu, Zhigang Fan, "Beam combination setup for dual-frequency laser with orthogonal linear polarization," Chin. Opt. Lett. 13, 101201 (2015)

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Paper Information

Category: Instrumentation, measurement, and metrology

Received: Apr. 9, 2015

Accepted: Jul. 23, 2015

Published Online: Sep. 13, 2018

The Author Email: Pengcheng Hu (hupc@hit.edu.cn)

DOI:10.3788/COL201513.101201

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology