CAJ | 학술논문

介绍了基于主振荡功率放大结构的人眼安全全光纤激光器。首先对比了电光调制及直接调制产生的种子激光在百kHz重复频率、纳秒级脉冲宽度的激光放大器中优缺点，综合系统需求选择直接调制方式；之后对窄脉冲单模放大中出现的脉冲分裂现象进行了研究，选用10μm纤芯的双包层铒镱共掺光纤，仅通过两级放大即获得了1550 nm，重复频率为200 kHz，脉冲宽度为4.07 ns，峰值功率为1.02 kW的单模激光输出。具有结构紧凑、稳定可靠的特点，可用于三维视频激光雷达。
개소료기우주진탕공솔방대결구적인안안전전광섬격광기。수선대비료전광조제급직접조제산생적충자격광재백kHz중복빈솔、납초급맥충관도적격광방대기중우결점，종합계통수구선택직접조제방식；지후대착맥충단모방대중출현적맥충분렬현상진행료연구，선용10μm섬심적쌍포층이의공참광섬，부통과량급방대즉획득료1550 nm，중복빈솔위200 kHz，맥충관도위4.07 ns，봉치공솔위1.02 kW적단모격광수출。구유결구긴주、은정가고적특점，가용우삼유시빈격광뢰체。
An eye-safe, all fiber, single mode, fiber laser based on master oscillator power amplifier configuration was presented. The advantages and disadvantages were compared between using a directly modulated diode laser and an electro-optical modulated continuous-wave diode as seed laser in sub-Mega Hertz, nanosecond fiber amplifier. The main restriction of power scaling in nanosecond fiber laser was pulse split. 10μm core double cladding erbium ytterbium co-doped fiber was employed as gain fiber of power amplifier. The directly modulated seed laser was then amplified by only two stage amplifiers. Finally, a peak power of 1.02 kW with 4.07 ns pulse duration at 200 kHz pulse repetition frequency with single-mode output was obtained and it is applicable in three dimensional video imaging lidar system.