532 nm laser damage and nonlinear absorption of Cr2O72− doped KDP crystals

Rapid growth processing of KDP crystals was improved by employing continuous filtration to eliminate bulk defects. The performances of the KDP crystals, including scattering defects, laser damage resistance and transmittance, were measured and analyzed. Compared with rapid-grown KDP without continuous filtration, the transmittance in the near-infrared was increased by at least 2%, almost all of ‘micron size’ defects were eliminated and ‘sub-micron size’ defects were decreased by approximately 90%. Laser damage testing revealed that the laser-induced damage thresholds (LIDTs), as well as the consistency of the LIDTs from sample to sample, were improved greatly. Moreover, it identified that ‘micron size’ defects were the precursors which initiated laser damage at relative lower laser fluence (4–6 J cm−2), and there was a lower correlation between smaller size scattering defects and laser damage initiation. The improved consistency in the LIDTs, attributed to elimination of ‘micron size’ defects, and LIDT enhancement originated from the decreased absorption of the KDP crystals.

Download Full-text

Bulk laser damage of large-size KDP crystals obtained at various crystal growth conditions

10.1117/12.180914 ◽

1994 ◽

Author(s):

Marina I. Kolybayeva ◽

Igor M. Pritula ◽

Viacheslav M. Puzikov ◽

Vitaly I. Salo ◽

Serge V. Garnov ◽

...

Keyword(s):

Crystal Growth ◽

Growth Conditions ◽

Laser Damage ◽

Large Size ◽

Kdp Crystals

Download Full-text

The Laser Damage Mechanism for NaCl and KBr at 532 nm — Theoretical Predictions and Experimental Tests

Laser Induced Damage in Optical Materials: 1987 ◽

10.1520/stp24460s ◽

2009 ◽

pp. 485-485-7

Author(s):

RT Casper ◽

SC Jones ◽

XA Shen ◽

P Braunlich ◽

P Kelly

Keyword(s):

Experimental Tests ◽

Damage Mechanism ◽

Laser Damage ◽

Theoretical Predictions ◽

532 Nm

Download Full-text

NONLINEAR-OPTICAL AND OPTICAL LIMITING PROPERTIES OF PHENOXY-PHTHALOCYANINES STUDIED USING THE Z-SCAN TECHNIQUE

Journal of Nonlinear Optical Physics & Materials ◽

10.1142/s0218863509004907 ◽

2009 ◽

Vol 18 (04) ◽

pp. 583-589 ◽

Cited By ~ 13

Author(s):

YUNDONG ZHANG ◽

LEI MA ◽

CHAOBO YANG ◽

PING YUAN

Keyword(s):

Absorption Coefficient ◽

Low Power ◽

Pulse Laser ◽

Nonlinear Absorption ◽

Nonlinear Optical ◽

Optical Limiting ◽

Nonlinear Absorption Coefficient ◽

Potential Candidate ◽

Single Beam ◽

532 Nm

The nonlinear-optical and optical limiting properties of 2(3), 9(10), 16(17), 23(24) phenoxy-phthalocyanines have been investigated using a 10-ns-pulse laser at 532 nm. The nonlinear absorption coefficient (β) is measured by the single beam Z-scan technique. We have observed low power optical limiting, with low limiting thresholds, based on nonlinear absorption in the sample. These studies indicate that the phthalocyanine material is a potential candidate for low power optical limiting applications.

Download Full-text

Thermo-optical effect and saturation of nonlinear absorption induced by gray tracking in a 532-nm-pumped KTP optical parametric oscillator

Optics Letters ◽

10.1364/ol.25.000484 ◽

2000 ◽

Vol 25 (7) ◽

pp. 484 ◽

Cited By ~ 18

Author(s):

Benoît Boulanger ◽

Jean-Philippe Fève ◽

Yannick Guillien

Keyword(s):

Optical Parametric Oscillator ◽

Nonlinear Absorption ◽

Parametric Oscillator ◽

Optical Effect ◽

Optical Parametric ◽

532 Nm

Download Full-text

NONLINEAR ABSORPTION AND OPTICAL LIMITING IN SOLUTIONS OF SOME RARE EARTH SUBSTITUTED PHTHALOCYANINES

Journal of Nonlinear Optical Physics & Materials ◽

10.1142/s0218863501000474 ◽

2001 ◽

Vol 10 (01) ◽

pp. 113-121 ◽

Cited By ~ 12

Author(s):

K. P. UNNIKRISHNAN ◽

JAYAN THOMAS ◽

BINOY PAUL ◽

ACHAMMA KURIAN ◽

PRAMOD GOPINATH ◽

...

Keyword(s):

Rare Earth ◽

Absorption Coefficient ◽

Nonlinear Absorption ◽

Optical Limiting ◽

Photon Absorption ◽

Open Aperture ◽

Pulse Excitation ◽

Two Photon Absorption ◽

Two Photon ◽

532 Nm

Effective nonlinear absorption coefficient, β eff , of solutions of some rare earth substituted phthalocyanines (viz: Sm(Pc)2, Eu(Pc)2 and LaPc) was measured using open aperture Z-scan technique under nanosecond pulse excitation at 532 nm. The effect of nonlinear absorption on optical limiting in these samples was also investigated. Both nonlinear absorption and optical limiting phenomena in these samples are attributed to sequential two-photon absorption (STPA) process.

Download Full-text

New Self-Focusing Materials: Synthesis, Structures and Nonlinear Optical Properties of Butterfly Shaped Clusters

MRS Proceedings ◽

10.1557/proc-374-151 ◽

1994 ◽

Vol 374 ◽

Cited By ~ 1

Author(s):

S. Shi ◽

X. Q. Xin

Keyword(s):

Optical Properties ◽

Nonlinear Absorption ◽

Nonlinear Optical ◽

Nonlinear Optical Properties ◽

Acetonitrile Solution ◽

Materials Synthesis ◽

Third Order ◽

Nlo Property ◽

Self Focusing ◽

532 Nm

AbstractCompounds WCu2OS3(PPh3)4 (I) and MoCu2OS3(PPh3)3 (II) were synthesized by reactions of (NH4)2MO2S2 (M = W, Mo), Cu2S and PPh3 in solid state for nonlinear optical studies. A wide transparent window (λ = 400 - 1000 nm) was observed for both clusters, which makes them attractive for nonlinear optical (NLO) applications. NLO properties of the clusters were studied with a 7-ns pulsed laser at 532 nm. Cluster I exhibits mainly optical self-focusing (n2 = 8 × 10-18 m2 W-1, as measured with an 1.2 × 10-4 M acetonitrile solution) with negligibly small nonlinear absorption. Cluster II exhibits both optical self-focusing (n2 = 5 × 10-17 m2 W-1, as measured with a 7.4 × 10-5 M acetonitrile solution) and nonlinear absorption (α2 = 2.6 × 10-10 m W-1). The third-order NLO susceptibilities (χ(3)) of the two clusters at the above-mentioned concentrations are 2 × 10-11 esu for I and 1.2 × 10-10 esu for II respectively. These nonlinear optical properties of the clusters were compared with those of cubic cage shaped and nest shaped clusters to reveal a qualitative structure/NLO property correlation.

Download Full-text