Temperature bandwidth of second-harmonic-generation in GdCOB crystal

Xinle Wang; Zhengping Wang; Fapeng Yu; Hongkai Ren; Feifei Chen; Yuxiang Sun; Xian Zhao; Xinguang Xu

doi:10.1364/OL.44.001742

Optics Letters
Vol. 44,
Issue 7,
pp. 1742-1745
(2019)
•https://doi.org/10.1364/OL.44.001742

Temperature bandwidth of second-harmonic-generation in GdCOB crystal

Xinle Wang, Zhengping Wang, Fapeng Yu, Hongkai Ren, Feifei Chen, Yuxiang Sun, Xian Zhao, and Xinguang Xu

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Xinle Wang, Zhengping Wang, Fapeng Yu, Hongkai Ren, Feifei Chen, Yuxiang Sun, Xian Zhao, and Xinguang Xu, "Temperature bandwidth of second-harmonic-generation in GdCOB crystal," Opt. Lett. 44, 1742-1745 (2019)

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Abstract

The temperature bandwidth of the second harmonic generation (SHG) phase-matching process was investigated for the ${GdCa}_{4} O {({BO}_{3})}_{3}$ (GdCOB) crystal. GdCOB exhibits a much broader temperature bandwidth in comparison with many familiar nonlinear optical (NLO) crystals. For a fundamental wave of 1,064 nm, the maximum temperature bandwidth appeared at ( $θ = 135 °$ , $ϕ = 47.3 °$ ), as predicted by the theoretical calculation and demonstrated by the SHG experiments. The GdCOB crystal is a good candidate for NLO frequency conversions under extreme temperatures.

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Orientations $(θ, ϕ)$	$d_{eff}$ (pm/V)	$η_{\max}$ ^a (%)	$Δ θ$ ^b (°)	$Δ ϕ$ ^c (°)	$ρ_{1}$ ^d (°)	$ρ_{2}$ ^e (°)	$Δ λ$ ^f (nm)	$Δ T_{FWHM}$ ^g (°C)	$Δ T l (° C \cdot cm)$
Orientations $(θ, ϕ)$	$d_{eff}$ (pm/V)	$η_{\max}$ ^a (%)	$Δ θ$ ^b (°)	$Δ ϕ$ ^c (°)	$ρ_{1}$ ^d (°)	$ρ_{2}$ ^e (°)	$Δ λ$ ^f (nm)	$Δ T_{FWHM}$ ^g (°C)	Measure ^h	Calculated
(66.3°, 46.9°)	0.58	23.5	0.45	0.05	0.35	1.01	0.70	24	29	30
(113.7°, 46.9°)	1.31	55.8	0.45	0.05	0.35	1.01	0.70	37	44	59
(19.2°, 0°)	0.31	25.0	0.05	3.71	0	0.86	0.68	74	83	67
(160.8°, 0°)	0.73	46.5	0.05	3.71	0	0.86	0.68	147	165	185
(148°, 41.9°)	0.17	4.1	0.13	0.10	0.27	0.94	0.71	186	210	212
(130°, 47.8°)	0.85	47.9	1.09	0.06	0.39	1.01	0.72	199	225	279
(135°, 47.3°)	0.58	27.9	0.42	0.06	0.37	1.00	0.71	381	$> 430$	3,900

Crystal	PM Angle (deg)	$Δ T l$ ( $° C \cdot cm$ )	$d n_{X} / d T$ ( $10^{- 6} ° C^{- 1}$ )	$d n_{Y} / d T$ ( $10^{- 6} ° C^{- 1}$ )	$d n_{Z} / d T$ ( $10^{- 6} ° C^{- 1}$ )	Origin
LN	(90, 30)	0.7	1.4	1.4	38.5	[16,17]
BIBO	(11.5, −90)	2.4	45.2	38.2	47.8	[18]
LBO	(90, 11.6)	5.8	−1.7	−13.0	−8.1	[19,20]
KDP	(41.1, 45)	23	−33.1	−33.1	−22.7	[21,22]
KTP	(90, 23.6)	24	16.5	25	34.0	[23]
KABO	(27.3, 0)	41.9	16.5	16.5	20.9	[24]
CLBO	(42.4, 0)	49.4	−12.8	−12.8	−8.3	[25]
BBO	(22.7, 30)	51	−16.6	−16.6	−9.3	[26]
YCOB	(30.8, 180)	$> 150$	2.9	4.9	5.0	[11]
GdCOB	(135, 47.3)	$> 430$	2.1	2.7	0.9	This study, [5]

Orientations $(θ, ϕ)$	$d_{eff}$ (pm/V)	$η_{\max}$ ^a (%)	$Δ θ$ ^b (°)	$Δ ϕ$ ^c (°)	$ρ_{1}$ ^d (°)	$ρ_{2}$ ^e (°)	$Δ λ$ ^f (nm)	$Δ T_{FWHM}$ ^g (°C)	$Δ T l (° C \cdot cm)$
Orientations $(θ, ϕ)$	$d_{eff}$ (pm/V)	$η_{\max}$ ^a (%)	$Δ θ$ ^b (°)	$Δ ϕ$ ^c (°)	$ρ_{1}$ ^d (°)	$ρ_{2}$ ^e (°)	$Δ λ$ ^f (nm)	$Δ T_{FWHM}$ ^g (°C)	Measure ^h	Calculated
(66.3°, 46.9°)	0.58	23.5	0.45	0.05	0.35	1.01	0.70	24	29	30
(113.7°, 46.9°)	1.31	55.8	0.45	0.05	0.35	1.01	0.70	37	44	59
(19.2°, 0°)	0.31	25.0	0.05	3.71	0	0.86	0.68	74	83	67
(160.8°, 0°)	0.73	46.5	0.05	3.71	0	0.86	0.68	147	165	185
(148°, 41.9°)	0.17	4.1	0.13	0.10	0.27	0.94	0.71	186	210	212
(130°, 47.8°)	0.85	47.9	1.09	0.06	0.39	1.01	0.72	199	225	279
(135°, 47.3°)	0.58	27.9	0.42	0.06	0.37	1.00	0.71	381	$> 430$	3,900

Crystal	PM Angle (deg)	$Δ T l$ ( $° C \cdot cm$ )	$d n_{X} / d T$ ( $10^{- 6} ° C^{- 1}$ )	$d n_{Y} / d T$ ( $10^{- 6} ° C^{- 1}$ )	$d n_{Z} / d T$ ( $10^{- 6} ° C^{- 1}$ )	Origin
LN	(90, 30)	0.7	1.4	1.4	38.5	[16,17]
BIBO	(11.5, −90)	2.4	45.2	38.2	47.8	[18]
LBO	(90, 11.6)	5.8	−1.7	−13.0	−8.1	[19,20]
KDP	(41.1, 45)	23	−33.1	−33.1	−22.7	[21,22]
KTP	(90, 23.6)	24	16.5	25	34.0	[23]
KABO	(27.3, 0)	41.9	16.5	16.5	20.9	[24]
CLBO	(42.4, 0)	49.4	−12.8	−12.8	−8.3	[25]
BBO	(22.7, 30)	51	−16.6	−16.6	−9.3	[26]
YCOB	(30.8, 180)	$> 150$	2.9	4.9	5.0	[11]
GdCOB	(135, 47.3)	$> 430$	2.1	2.7	0.9	This study, [5]

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Equations (6)

Optics Letters