A novel common-path scheme for fourth harmonic generation by ultrashort laser pulses

被引：4

作者：

Susnjar, Peter ^{[1
]}

Demidovich, Alexander ^{[1
]}

Kurdi, Gabor ^{[1
]}

Cinquegrana, Paolo ^{[1
]}

Nikolov, Ivaylo ^{[1
]}

Sigalotti, Paolo ^{[1
]}

Danailov, Miltcho B. ^{[1
]}

机构：

[1] Elettra Sincrotrone Trieste SCpA, Str Statale 14,Km 163,5 AREA Sci Pk, I-34149 Trieste, Italy

来源：

OPTICS COMMUNICATIONS | 2023年 / 528卷

关键词：

Fourth harmonic generation; Sum-frequency generation; Deep ultraviolet; Ultrafast laser; FREQUENCY-CONVERSION; FEMTOSECOND PULSES; NEODYMIUM LASER; CRYSTAL;

D O I：

10.1016/j.optcom.2022.129031

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A new compact common-path scheme for Fourth-Harmonic Generation (FHG) of femtosecond laser pulses is proposed here. Guidelines for selection of non-linear crystals and birefringent crystals used for delay pre-compensation are derived based on approximation of non-saturated sum-frequency mixing of Gaussian pulses. We experimentally demonstrate the scheme and study its performance for a different combinations of BBO nonlinear crystals for the case of generation of sub-200 nm deep ultraviolet pulses by FHG of pulses delivered by a Ti:Sapphire ultrafast laser. Pulses with duration between 130 fs and 370 fs and pulse energy of 19 to 85 mu J were generated. It is shown, that in addition to its compactness and intrinsic stability, the scheme allows a superior spectrum and pulse quality.

引用

页数：7