自注入锁定激光器的频率热调谐方法改进

王宇欣; 钟山; 梁伟; 赵峰; 詹志明; 阎柏屹; 康松柏

doi:10.37188/CO.2024-0025

自注入锁定激光器的频率热调谐方法改进

doi: 10.37188/CO.2024-0025

王宇欣^{1, 2,},
钟山^1,,
梁伟^3,,
赵峰^1, ,,
詹志明²,
阎柏屹^{3, 4},
康松柏¹

1.
中国科学院精密测量科学与技术创新研究院, 湖北武汉 430071
2.
江汉大学人工智能学院, 湖北武汉 430056
3.
中国科学院苏州纳米技术与纳米仿生研究所, 江苏苏州 215123
4.
西交利物浦大学, 江苏苏州 215123

基金项目: 国家自然科学基金（No. 62075233）；中国科学院稳定支持基础研究领域青年团队计划（No. YSBR-69）；科技创新 2030―“量子通信与量子计算机”重大项目（No. 2023ZD0301500）

详细信息

作者简介:
王宇欣（1995—），女，辽宁抚顺人，硕士研究生，2017年于沈阳工业大学获得学士学位，主要从事窄线宽激光器方面的研究。E-mail：183160683@qq.com

钟　山（1982—），男，博士，高级工程师，硕士生导师，2005年和2012年均于武汉大学获得学士学位及博士学位，主要从事窄线宽激光器，激光锁频，原子干涉仪等方面的研究。E-mail：zhongshan@apm.ac.cn

梁　伟，男，博士，研究员，博士生导师，2001年于清华大学获得学士学位，2008年博于美国加州理工获得博士学位，主要从事窄线宽激光器，光学频率梳，光电振荡器方面的研究。E-mail： wliang2019@sinano.ac.cn

赵　峰，男，博士，正高级工程师，博士生导师，2000年于华中科技大学获得学士学位，2007年于中科院武汉物理与数学研究所获得博士学位，主要从事原子钟，原子频标方面的研究。E-mail：zf_lucky@apm.ac.cn

中图分类号: TN248
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出版历程
- 收稿日期: 2024-01-29
- 录用日期: 2024-04-26
- 网络出版日期: 2024-06-01

Enhanced method for thermal frequency tuning of an self-injection locked laser

WANG Yuxin^{1, 2
,},
ZHONG Shan^1
,,
LIANG Wei^3
,,
ZHAO Feng^{1
, ,},
ZHAN Zhiming²,
YAN Baiyi^{3, 4},
KANG Songbai¹

1.
Key Laboratory of Atomic Frequency Standards, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan 430071, China
2.
School of Artificial Intelligence, Jianghan University, Wuhan 430056, Hubei, China
3.
Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, Jiangsu, China
4.
Xi’an Jiaotong-Liverpool University, Suzhou 215123, Jiangsu, China

Funds: Supported by National Natural Science Foundation of China (No. 62075233); CAS Project for Young Scientists in Basic Research (No. YSBR-69); Innovation Program for Quantum Science and Technology (No. 2023ZD0301500)

More Information

Corresponding author: zf_lucky@apm.ac.cn

摘要

摘要:
目的
为了提高自注入锁定激光器频率连续可调谐范围，对FP微腔在频率热调谐过程中注入锁定相位的变化关系进行研究。
方法
在传统频率热调谐的基础上，对自注入锁定激光器频率和相位等参数特性进行研究，提出一种在频率热调谐时加入自注入锁定相位补偿和DFB芯片电流补偿的改进算法，并在一台基于法布里-珀罗（FP）微腔自注入锁定激光器上对此算法进行验证实验。这台激光器波长为1550 nm，3 dB线宽为785 Hz，通过一对加热电阻对FP微腔进行频率热调谐。
结果
改进后的算法在激光器原有驱动控制电路的单片机程序中实现，激光器硬件部分未作任何修改，最终实现了6GHz的频率连续调谐范围。
结论
该工作为自注入锁定激光器提供一种简单高效且稳定性好的频率调谐方案，具有较高的实用性和市场前景。
- 激光器 /
- 频率调谐 /
- 自注入 /
- 窄线宽
Abstract:
Objective
In order to enhance the continuous tunable range of a self-injection-locked laser frequency, a study is conducted on the variation relationship of the injected locking phase of the FP microcavity during the frequency-thermal tuning process.
Method
Building upon traditional frequency thermotuning methods, this study explores the characteristics of frequency and phase parameters of a self-injection locked laser. We proposed an improved algorithm that integrates injection locking phase compensation and DFB chip current compensation during frequency thermotuning. Experimental validation of this algorithm was conducted on a Fabry-Perot (FP) micro-cavity self-injection locked laser. The laser operates at a wavelength of 1550nm with a 3dB linewidth of 785Hz, achieving frequency thermotuning of the FP micro-cavity using a pair of heating resistors.
Result
The enhanced algorithm is implemented within the microcontroller program of the laser's original drive control circuit. No modifications are made to the hardware components of the laser. Ultimately, this implementation achieves a continuous frequency tuning range of 6 GHz.
Conclusion
This work provides a simple, efficient, and stable frequency tuning solution for self-injection-locked lasers, demonstrating high practicality and promising market prospects.
- lasers /
- frequency tuning /
- self-injection locking /
- narrow linewidth

HTML全文

图 1 激光器及线宽测试图

Figure 1. Laser and Linewidth Test

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图 2 激光器光路示意图

Figure 2. Schematic Diagram of the Laser Optical Path

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图 3 驱动电路及控制算法

Figure 3. Drive Circuit and Control Algorithm

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图 4 调节FP微腔加热电阻的频率调谐范围

Figure 4. Frequency Tuning Range by Adjusting the Heating Resistor of the FP Microcavity

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图 5 FP微腔加热电阻电压在不同电压下的波形状态。

Figure 5. Waveform states of the FP microcavity heating resistor voltage at different voltages.

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图 6 两个相位之间的线性关系

Figure 6. Linear Relationship between Two Phases

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图 7 相位补偿后的频率调谐范围

Figure 7. Frequency Tuning Range After Phase Compensation

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图 8 电流补偿后的频率调谐范围

Figure 8. Frequency Tuning Range After Current Compensation

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