Thermal conductivities of some novel nonlinear optical materials

J. Donald Beasley

doi:10.1364/AO.33.001000

Thermal conductivities of some novel nonlinear optical materials

J. Donald Beasley

Applied Optics
Vol. 33,
Issue 6,
pp. 1000-1003
(1994)
•doi: 10.1364/AO.33.001000

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J. Donald Beasley, "Thermal conductivities of some novel nonlinear optical materials," Appl. Opt. 33, 1000-1003 (1994)

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Abstract

Results of thermal conductivity measurements are reported for several of the more recently developed nonlinear optical crystals. New or substantially revised values of thermal conductivity were obtained in six materials. Notable thermal conductivities measured were those for AgGaS₂ [0.014 W/(cm K) and 0.015 W/(cm K)], AgGaSe₂ [0.010 W/(cm K) and 0.011 W/(cm K)], beta barium borate [0.016 W/(cm K) and 0.012 W/(cm K)], and ZnGeP₂ [0.36 W/(cm K) and 0.35 W/(cm K)], with values quoted for directions respectively parallel and perpendicular to the optic axis for each material. These new data provide necessary input for the design of high-power optical frequency converters.

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A ₁	Area available on the flat surface of the source (cm²)
A_s	Area of the cross section of the sample (cm²)
C _p1	Specific heat of copper, 0.389 J/(g K)
C_ps	Specific heat of the sample [J/(g K)]
G	Correction factor related to the specific heat of the sample
K_s	Thermal conductivity of the sample [W/(cm K)]
K_s′	Thermal conductivity calculated with G = 1[W/(cm K)]
L	Length of the sample in the direction of heat flow (cm)
m ₁	Mass of the source (g)
m_s	Mass of the sample (g)
r_c	Thermal impedance of contacted copper surfaces (K/W)
R_L	Leakage impedance for an open thermal circuit (K/W)
T ₁	Temperature of the source (K)
T ₂	Temperature of the receiver (K)

Material	Previously Reported Values			Values Measured in This Research[W/(cm K)]

	W/(cm K)		Reference
AgGaS₂		0.115 ^b	5	p	0014
		0.045 ^b	6	s	0.015
AgGaSe₂	nr	0.0124	7	p	0.010
	nr	0.026	8	s	0.011
BBO	p	0.008	10	p	0.016
	s	0.0008	10	s	0.012
CdSe	nr	0.044	11	p	0.069
	nr	0.09	12	s	0.062
LBO		—		av	0.035
ZnGeP₂	nr	0.18	9	p	0.36
				s	0.35
CdS ^c	nr	0.16	12	p	0.16
				s	0.14
Crystalline	p	0.113 ^d	12, 13	p	0.117
Quartz ^c	s	0.066 ^d	12, 13	s	0.065
Fused silica ^c		0.0132	13		0.014
Ge ^c		0.59	12		0.58
MgF₂ ^c	nr	0.30	14	p	0.30
	nr	0.21	12	s	0.21

A ₁	Area available on the flat surface of the source (cm²)
A_s	Area of the cross section of the sample (cm²)
C _p1	Specific heat of copper, 0.389 J/(g K)
C_ps	Specific heat of the sample [J/(g K)]
G	Correction factor related to the specific heat of the sample
K_s	Thermal conductivity of the sample [W/(cm K)]
K_s′	Thermal conductivity calculated with G = 1[W/(cm K)]
L	Length of the sample in the direction of heat flow (cm)
m ₁	Mass of the source (g)
m_s	Mass of the sample (g)
r_c	Thermal impedance of contacted copper surfaces (K/W)
R_L	Leakage impedance for an open thermal circuit (K/W)
T ₁	Temperature of the source (K)
T ₂	Temperature of the receiver (K)

Material	Previously Reported Values			Values Measured in This Research[W/(cm K)]

	W/(cm K)		Reference
AgGaS₂		0.115 ^b	5	p	0014
		0.045 ^b	6	s	0.015
AgGaSe₂	nr	0.0124	7	p	0.010
	nr	0.026	8	s	0.011
BBO	p	0.008	10	p	0.016
	s	0.0008	10	s	0.012
CdSe	nr	0.044	11	p	0.069
	nr	0.09	12	s	0.062
LBO		—		av	0.035
ZnGeP₂	nr	0.18	9	p	0.36
				s	0.35
CdS ^c	nr	0.16	12	p	0.16
				s	0.14
Crystalline	p	0.113 ^d	12, 13	p	0.117
Quartz ^c	s	0.066 ^d	12, 13	s	0.065
Fused silica ^c		0.0132	13		0.014
Ge ^c		0.59	12		0.58
MgF₂ ^c	nr	0.30	14	p	0.30
	nr	0.21	12	s	0.21

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