Single-frequency 45-mJ pulses from a MOPA system using an Er,Yb:glass planar waveguide amplifier and a large mode area Er-doped fiber amplifier

被引：10

作者：

Nomura, Junia ^{[1
]}

Hirosawa, Kenichi ^{[1
]}

Yanagisawa, Takayuki ^{[2
]}

Ohata, Nobuo ^{[1
]}

Imamura, Shunsuke ^{[3
]}

Sakaizawa, Daisuke ^{[3
]}

Tomii, Naoya ^{[3
]}

机构：

[1] Mitsubishi Electr Corp, Informat Technol R&D Ctr, 5-1-1 Ofuna, Kamakura, Kanagawa 2478501, Japan

[2] Mitsubishi Electr Corp, Commun Syst Ctr, 8-1-1 Tsukaguchi Honmachi, Amagasaki, Hyogo 6618661, Japan

[3] Japan Aerosp Explorat Agcy, 6-13-1 Osawa, Mitaka, Tokyo 1810015, Japan

来源：

OPTICS LETTERS | 2023年 / 48卷 / 07期

关键词：

COHERENT LASER-RADAR; EYE-SAFE; MU-M; LIDAR; ENERGY;

D O I：

10.1364/OL.485519

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We demonstrate a master oscillator power amplifier (MOPA) system that emits single-frequency high-energy optical pulses at 1540 nm using an Er,Yb:glass planar wave-guide amplifier and a large mode area Er-doped fiber amplifier. A double under-cladding and a 50-mu m-thick core structure are employed for the planar waveguide amplifier to increase the output energy without degrading the beam quality. A pulse energy of 45.2 mJ with a peak power of 27 kW is generated at a pulse repetition rate of 150 Hz with a pulse duration of 1.7 mu s. Moreover, the beam quality factor M2 of the output beam is 1.84 at the highest pulse energy thanks to its waveguide structure.(c) 2023 Optica Publishing Group

引用

页码：1758 / 1761

页数：4

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