J4 ›› 2017, Vol. 34 ›› Issue (1): 32-35.

• 激光技术与器件 • 上一篇    下一篇

近红外高速皮秒激光器的研制

刘云1,吕利影1,苗春华1,尹凯1,刘婧婧1,何德勇2   

  1. 1 安徽问天量子科技股份有限公司,安徽省量子安全工程技术研究中心, 安徽 芜湖 241000; 2 中国科学技术大学,中国科学院量子信息重点实验室,安徽 合肥 230026
  • 收稿日期:2015-11-20 修回日期:2016-02-29 出版日期:2017-01-28 发布日期:2017-01-28
  • 通讯作者: 刘云(1979-),湖北人,博士,从事量子信息的研究。 E-mail:yunliu@mail.ustc.edu.cn

Design of near infrared high-speed picosecond lasers

LIU Yun, LV Liying, MIAO Chunhua, YIN Kai, LIU Jingjing, HE Deyong   

  1. 1 Anhui Quantum-Safe Engineering Technical Research Center, Anhui Qasky Quantum Science and Technology Company Limited, Wuhu 241000, China; 2 Key Laboratory of Quantum Information, Chinese Academy of Sciences, University of Science and Technology of China, Hefei 230026, China
  • Received:2015-11-20 Revised:2016-02-29 Published:2017-01-28 Online:2017-01-28

摘要: 新兴的量子密码技术对激光器提出了新的要求。为了满足要求,设计了一种高速内调制半导体激光器。利用专门设计的脉冲整形电路,将输入的触发信号经过扇出电路分成两路,分别经过延时电路产生不同的延时,利用逻辑电路将两路信号转换成窄脉冲信号,通过射频放大电路驱动激光器发光,使输出光脉冲频率达到1 GHz,脉冲宽度小于24 ps,时间抖动小于12 ps,-10 dB谱线宽度仅0.7 nm,输出光波长和功率稳定性高。所研制激光器可满足频率达1 GHz的高速量子密钥分配的需求。

关键词: 激光技术;皮秒激光器;内调制;高速;近红外

Abstract: The emerging quantum cryptography technology put forward new requirements for lasers. To meet the requirements, an internal modulated semiconductor laser with high speed is developed. By using a special pulse shaping circuit designed, an input trigger pulse is divided into two pulses by a fan-out circuit. The two pulses pass through a delay circuit to produce different delay. The two signals are turned into a short pulse signal by a logic circuit. An RF amplifying circuit is used to drive a laser diode. The output laser pulse frequency can reach 1 GHz, the pulse width is less that 24 ps, time jitter is less than 12 ps and the -10 dB spectrum width is only 0.7 nm. Wavelength and power of the output laser have high stability. The laser designed can meet the requirements of a high-speed quantum key distribution with 1 GHz frequency.

Key words: laser technique; picosecond laser; internal modulation; high speed; near infrared

中图分类号: