Cascade generation in Al laser induced plasma

Lev Nagli; Michael Gaft; Yosef Raichlin; Igor Gornushkin

doi:10.1016/j.optcom.2018.01.041

Cascade generation in Al laser induced plasma

Lev Nagli, Michael Gaft, Yosef Raichlin, Igor Gornushkin

Department of Physics

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

Abstract

We found cascade IR generation in Al laser induced plasma. This generation includes doublet transitions 3s ²5s ²S_1/2→ 3s²4p ²P_1/2,3/2→ 3s²4s ²S_1/2; corresponding to strong lines at 2110 and 2117 nm, and much weaker lines at 1312–1315 nm. The 3s²5s²S _1/2 starting IR generation level is directly pumped from the 3s²3p ²P_3/2 ground level. The starting level for UV generation at 396.2 nm (transitions 3s²4s ²S_1/2→ 4p ²P_3/2) is populated due to the fast collisional processes in the plasma plume. These differences led to different time and special dependences on the lasing in the IR and UV spectral range within the aluminum laser induced plasma.

Original language	English
Pages (from-to)	127-129
Number of pages	3
Journal	Optics Communications
Volume	415
DOIs	https://doi.org/10.1016/j.optcom.2018.01.041
State	Published - 15 May 2018

Keywords

Al plasma IR generation
Laser induced plasma
Optically pumped gaseous lasers

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10.1016/j.optcom.2018.01.041

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title = "Cascade generation in Al laser induced plasma",

abstract = "We found cascade IR generation in Al laser induced plasma. This generation includes doublet transitions 3s 25s 2S1/2→ 3s24p 2P1/2,3/2→ 3s24s 2S1/2; corresponding to strong lines at 2110 and 2117 nm, and much weaker lines at 1312–1315 nm. The 3s25s2S 1/2 starting IR generation level is directly pumped from the 3s23p 2P3/2 ground level. The starting level for UV generation at 396.2 nm (transitions 3s24s 2S1/2→ 4p 2P3/2) is populated due to the fast collisional processes in the plasma plume. These differences led to different time and special dependences on the lasing in the IR and UV spectral range within the aluminum laser induced plasma.",

keywords = "Al plasma IR generation, Laser induced plasma, Optically pumped gaseous lasers",

author = "Lev Nagli and Michael Gaft and Yosef Raichlin and Igor Gornushkin",

note = "Publisher Copyright: {\textcopyright} 2018 Elsevier B.V.",

year = "2018",

month = may,

day = "15",

doi = "10.1016/j.optcom.2018.01.041",

language = "אנגלית",

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pages = "127--129",

journal = "Optics Communications",

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TY - JOUR

T1 - Cascade generation in Al laser induced plasma

AU - Nagli, Lev

AU - Gaft, Michael

AU - Raichlin, Yosef

AU - Gornushkin, Igor

PY - 2018/5/15

Y1 - 2018/5/15

N2 - We found cascade IR generation in Al laser induced plasma. This generation includes doublet transitions 3s 25s 2S1/2→ 3s24p 2P1/2,3/2→ 3s24s 2S1/2; corresponding to strong lines at 2110 and 2117 nm, and much weaker lines at 1312–1315 nm. The 3s25s2S 1/2 starting IR generation level is directly pumped from the 3s23p 2P3/2 ground level. The starting level for UV generation at 396.2 nm (transitions 3s24s 2S1/2→ 4p 2P3/2) is populated due to the fast collisional processes in the plasma plume. These differences led to different time and special dependences on the lasing in the IR and UV spectral range within the aluminum laser induced plasma.

AB - We found cascade IR generation in Al laser induced plasma. This generation includes doublet transitions 3s 25s 2S1/2→ 3s24p 2P1/2,3/2→ 3s24s 2S1/2; corresponding to strong lines at 2110 and 2117 nm, and much weaker lines at 1312–1315 nm. The 3s25s2S 1/2 starting IR generation level is directly pumped from the 3s23p 2P3/2 ground level. The starting level for UV generation at 396.2 nm (transitions 3s24s 2S1/2→ 4p 2P3/2) is populated due to the fast collisional processes in the plasma plume. These differences led to different time and special dependences on the lasing in the IR and UV spectral range within the aluminum laser induced plasma.

KW - Al plasma IR generation

KW - Laser induced plasma

KW - Optically pumped gaseous lasers

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SN - 0030-4018

VL - 415

SP - 127

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JO - Optics Communications

JF - Optics Communications

ER -

Cascade generation in Al laser induced plasma

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