Over 3.8 W, 3.4 μm picosecond mid-infrared parametric conversion based on a simplified one-to-many scheme

被引：3

作者：

Zhao, Junqing ^{[1
,2
]}

Chen, Yewang ^{[1
]}

Ouyang, Deqin ^{[1
]}

Liu, Minqiu ^{[1
]}

Li, Chunbo ^{[1
]}

Wu, Xu ^{[1
]}

Xiong, Xianwei ^{[1
,3
]}

Mo, Liqiang ^{[1
,3
]}

Wang, Meng ^{[1
]}

Liu, Xing ^{[1
]}

Lv, Qitao ^{[1
,4
]}

Ruan, Shuangchen ^{[1
]}

机构：

[1] Shenzhen Technol Univ, Key Lab Adv Opt Precis Mfg Technol Guangdong Highe, Guangdong Higher Educ Inst, Shenzhen 518118, Peoples R China

[2] Shenzhen Technol Univ, Coll Phys Teaching, Expt Ctr, Shenzhen 518118, Peoples R China

[3] Shenzhen Univ, Coll Appl Technol, Shenzhen 518060, Peoples R China

[4] Hans Laser Technol Ind Grp Co Ltd, Shenzhen 518103, Peoples R China

来源：

OPTICS EXPRESS | 2024年 / 32卷 / 05期

基金：

中国国家自然科学基金;

关键词：

DIFFERENCE-FREQUENCY-GENERATION; HIGH-POWER; FIBER AMPLIFIER; CONTINUOUS-WAVE; BROAD-BAND; EFFICIENT; IR;

D O I：

10.1364/OE.516265

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

In this paper, we demonstrate a simplified one -to -many scheme for efficient midinfrared (MIR) parametric conversion. Such a scheme is based on a continuous wave (CW) single longitudinal mode master oscillator power -amplifier (MOPA) fiber system as the signal source and a picosecond pulsed MOPA fiber system, exhibiting multiple longitudinal modes, as the pump source. The signal and pump beams are combined and co -coupled into a piece of 50 -mm long 5% MgO-doped PPLN crystal for the parametric conversion. As high as similar to 3.82 W average power at a central idler wavelength of similar to 3.4 mu m is achieved when the launched pump and signal powers are similar to 41.73 and similar to 11.45 W, respectively. Above some threshold value, the delivered idler power shows a roll-over effect against the signal power and saturation -like effect against the pump power. Consequently, the highest conversion efficiency is observed at such a threshold pump power. To the best of our knowledge, our result represents the highest average power produced from any single -pass parametric conversion source with >3 mu m idler wavelength feeding with a CW signal. Moreover, our proposed scheme can simplify the design of parametric conversion system significantly and meanwhile make the system more robust in applications. This is attributed to two main aspects. Firstly, the scheme's one -to -many feature can reduce wavelength sensitivity remarkably in the realization of quasi -phase -matching. Secondly, for moderate power requirement it does not always require a high peak power synchronized pulsed signal source; a CW one can be an alternative, thereby making the system free from complex time synchronization and the related time jitter. (c) 2024 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement

引用

页码：8364 / 8378

页数：15