Phase matching characteristics of deuterated ammonium dihydrogen phosphate crystals

$Refractive indices of DADP crystals. (a) Ordinary indices of refraction. (b) Extraordinary indices of refraction. Points indicate experimental values whereas the curves are the fitting lines.$

Fig. 4. Refractive indices of DADP crystals. (a) Ordinary indices of refraction. (b) Extraordinary indices of refraction. Points indicate experimental values whereas the curves are the fitting lines.

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Fig. 5. Birefringence of DADP crystals. Data of 96% DADP comes from Kirby.

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Fig. 6. Index comparisons of KDP and ADP. Last ordinary index of KDP is obtained by the extrapolation of the Sellmeier fit^[10].

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Table 1. Sellmeier Parameters of DADP Crystals

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Table 1. Sellmeier Parameters of DADP Crystals

		$A$	$B$	$C$	$D$	$E$
ADP	$n_{o}$	2.29933	0.61290	18.52848	0.01143	0.01245
ADP	$n_{e}$	2.16050	0.12999	11.53923	0.00991	0.01197
DADP, 30%	$n_{o}$	2.29541	1.10548	34.99480	0.01104	0.01266
DADP, 30%	$n_{e}$	2.15862	0.23192	20.06127	0.00972	0.01222
DADP, 30%	$n_{o}$	2.29090	1.07025	37.56861	0.01104	0.01292
DADP, 30%	$n_{e}$	2.15603	0.19362	18.70658	0.00965	0.01249
DADP, 70%	$n_{o}$	2.28573	0.58616	24.31843	0.01109	0.01251
DADP, 70%	$n_{e}$	2.15355	0.15057	16.50826	0.00958	0.01268

Table 2. Calculated PM Angles for DADP Crystals

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Table 2. Calculated PM Angles for DADP Crystals

	SHG-I		SHG-II		THG-I		THG-II
	1053	1064	1053	1064	1053	1064	1053	1064
ADP	41.31	41.34	60.77	60.71	48.30	47.87	60.79	60.05
DADP, 30%	40.35	40.35	59.45	59.35	47.87	47.42	60.49	59.73
DADP, 50%	39.35	39.33	57.94	57.80	47.58	47.13	60.32	59.55
DADP, 70%	38.21	38.15	56.26	56.08	47.26	46.78	60.12	59.32

Table 3. Calculated NCPM Wavelengths for DADP Crystalsa
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Table 3. Calculated NCPM Wavelengths for DADP Crystalsa
ADP 30% 50% 70%
Experiment value (292 K) 524 524–525 525–526 —
Calculated value (302 K) 525.4 525.5 527.3 528.6

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Lili Zhu, Baoan Liu, Lisong Zhang, Qinghua Zhang, Zhengping Wang, Xun Sun, "Phase matching characteristics of deuterated ammonium dihydrogen phosphate crystals," Chin. Opt. Lett. 13, 041601 (2015)

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