DICP OpenIR
Highly efficient Raman conversion in O-2 pumped by a seeded narrow band second-harmonic Nd : YAG laser
Hua, X; Leng, J; Yang, H; Sha, G; Zhang, C
刊名APPLIED PHYSICS B-LASERS AND OPTICS
2005-08-01
DOI10.1007/s00340-005-1927-x
81期:4页:525-530
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences
类目[WOS]Optics ; Physics, Applied
研究领域[WOS]Optics ; Physics
关键词[WOS]STIMULATED BRILLOUIN-SCATTERING ; RADIATION ; OXYGEN ; GAIN
英文摘要The first-Stokes conversion efficiency for a stimulated Raman scattering (SRS) is usually very low in gaseous oxygen media. In 3.0 Mpa O-2, a single longitudinal mode second harmonic Nd:YAG laser pump source gives a typical vibrational first-Stokes conversion efficiency of only 2.5%, In comparison, the accompanying stimulated Brillouin scattering (SBS) attains a reflectivity of 67%. However, by seeding an OPO beam into the Raman cavity, the first-Stokes photon conversion efficiency now attains a peak value of 54%, while the SBS reflectivity reduces to 5% in a 6.1 Mpa 41:59 O-2/ He mixture. This 54% efficiency was obtained for a seeder laser pulse-width less than one half that of pump laser (6.8 ns). A first-Stokes peak power conversion efficiency as high as 88% has been obtained when the pump and seeder pulse peaks coincide. So, we may expect a higher first-Stokes photon conversion efficiency if the seeder pulse-width can be made equal to or larger than that of the pump pulse. On the other hand, the beam quality of the first-Stokes in an O-2/ He mixture excels that of the pump laser for a seeder energy of 5 mJ and pump energy of 50 mJ. However, at pump energies higher than 105 mJ and a pump laser repetition rate of 10 Hz, the thermal defocusing effect worsens the first-Stokes beam quality. This thermal defocusing effect is a result of the Raman heat release and could be eliminated by fast circulating and cooling the Raman gas medium.
语种英语
WOS记录号WOS:000231460800015
引用统计
被引频次:10[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/139626
专题中国科学院大连化学物理研究所
作者单位Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Peoples R China
推荐引用方式
GB/T 7714
Hua, X,Leng, J,Yang, H,et al. Highly efficient Raman conversion in O-2 pumped by a seeded narrow band second-harmonic Nd : YAG laser[J]. APPLIED PHYSICS B-LASERS AND OPTICS,2005,81(4):525-530.
APA Hua, X,Leng, J,Yang, H,Sha, G,&Zhang, C.(2005).Highly efficient Raman conversion in O-2 pumped by a seeded narrow band second-harmonic Nd : YAG laser.APPLIED PHYSICS B-LASERS AND OPTICS,81(4),525-530.
MLA Hua, X,et al."Highly efficient Raman conversion in O-2 pumped by a seeded narrow band second-harmonic Nd : YAG laser".APPLIED PHYSICS B-LASERS AND OPTICS 81.4(2005):525-530.
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Hua, X]的文章
[Leng, J]的文章
[Yang, H]的文章
百度学术
百度学术中相似的文章
[Hua, X]的文章
[Leng, J]的文章
[Yang, H]的文章
必应学术
必应学术中相似的文章
[Hua, X]的文章
[Leng, J]的文章
[Yang, H]的文章
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。