High energy, high repetition rate, second harmonic generation in large aperture DKDP, YCOB, and LBO crystals

被引：32

作者：

Phillips, Jonathan P. ^{[1
]}

Banerjee, Saumyabrata ^{[1
]}

Smith, Jodie ^{[1
]}

Fitton, Mike ^{[1
]}

Davenne, Tristan ^{[1
]}

Ertel, Klaus ^{[1
]}

Mason, Paul ^{[1
]}

Butcher, Thomas ^{[1
]}

De Vido, Mariastefania ^{[1
]}

Greenhalgh, Justin ^{[1
]}

Edwards, Chris ^{[1
]}

Hernandez-Gomez, Cristina ^{[1
]}

Collier, John ^{[1
]}

机构：

[1] Rutherford Appleton Lab, Sci & Technol Facil Council, Harwell Sci & Innovat Campus, Didcot OX11 0QX, Oxon, England

来源：

OPTICS EXPRESS | 2016年 / 24卷 / 17期

关键词：

LASER; EFFICIENCY; AMPLIFIER;

D O I：

10.1364/OE.24.019682

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report on type-I phase-matched second harmonic generation (SHG) in three nonlinear crystals: DKDP (98% deuteration), YCOB (XZ plane), and LBO (XY plane), of 8 J, 10 Hz cryogenic gas cooled Yb:YAG laser operating at 1029.5 nm. DKDP exhibited an efficiency of 45% at a peak fundamental intensity of 0.24 GW/cm(2) for 10 Hz operation at 10 ns. At the same intensity and repetition rate, YCOB and LBO showed 50% and 65% conversion efficiencies, respectively. Significant improvement in conversion efficiency, to a maximum of 82%, was demonstrated in LBO at 0.7 GW/cm(2) and 10 Hz, generating output energy of 5.6 J at 514.75 nm, without damage or degradation. However, no improvement in conversion efficiency was recorded for YCOB at this increased intensity. Additionally, we present theoretically calculated temperature maps for both 10 J and 100 J operation at 10 Hz, and discuss the suitability of these three crystals for frequency conversion of a 100 J, 10 Hz diode pumped solid state laser (DPSSL). (C) 2016 Optical Society of America

引用

页码：19682 / 19694

页数：13

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