Implementation of the wide-angle acousto-optical interaction geometry in a mercury bromide single crystal

Evgeniy Dyakonov; Dmitriy Porokhovnichenko; Jaeyeol Ryu; Vladimir Balakshy

doi:10.1364/AO.417401

Applied Optics
Vol. 60,
Issue 8,
pp. 2348-2353
(2021)
•https://doi.org/10.1364/AO.417401

Implementation of the wide-angle acousto-optical interaction geometry in a mercury bromide single crystal

Evgeniy Dyakonov, Dmitriy Porokhovnichenko, Jaeyeol Ryu, and Vladimir Balakshy

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Evgeniy Dyakonov, Dmitriy Porokhovnichenko, Jaeyeol Ryu, and Vladimir Balakshy, "Implementation of the wide-angle acousto-optical interaction geometry in a mercury bromide single crystal," Appl. Opt. 60, 2348-2353 (2021)

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Abstract

A number of acousto-optic figures of merit and elasto-optic constants of a mercury bromide (${\rm Hg}_2{\rm Br}_2$) crystal were measured. The key characteristics of the wide-angular acousto-optic tunable filter based on a ${\rm Hg}_2{\rm Br}_2$ crystal in the ($1\bar 10$) plane were calculated from the measurements carried out and previously known data. It is demonstrated that the crystal makes it possible to create effective devices operating in the 5–25 µm wavelength range. In addition, we proposed the design of a filter operating in the long-wavelength infrared range of 8–12 µm, providing spectral resolution up to $R = 300$ and a field of view outside the crystal up to 10°. Its diffraction efficiency can reach up to 2% per 1 W of continuous driving power.

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Crystal	Optical Transparency Range Boundaries, µm		$n_{o}$	$n_{e}$	$Δ n$
${H g}_{2} {C l}_{2}$	$λ_{min}$	0.38	2.122	3.190	1.068
${H g}_{2} {C l}_{2}$	$λ_{max}$	20	1.898	2.444	0.546
${H g}_{2} {B r}_{2}$	$λ_{min}$	0.42	2.305	3.703	1.398
${H g}_{2} {B r}_{2}$	$λ_{max}$	30	2.033	2.700	0.667
${H g}_{2} I_{2}$	$λ_{min}$	0.53	2.546	4.560	2.014
${H g}_{2} I_{2}$	$λ_{max}$	40	2.254	3.210	0.956

$p_{e f f}$	$M_{2}$ , ${H g}_{2} {B r}_{2}$ , exp. $10^{- 15} s^{3} / k g$	$p_{e f f}$ , ${H g}_{2} {B r}_{2}$ , exp.	$M_{2}$ , ${H g}_{2} {C l}_{2}$ , theor. $10^{- 15} s^{3} / k g$	$p_{e f f}$ , ${H g}_{2} {C l}_{2}$ [1]
$(p_{11} + p_{12} + 2 p_{66}) / 2$	$645 \pm 35$	$0.60 \pm 0.03$	270	0.543
$p_{31}$	$235 \pm 35$	$0.13 \pm 0.01$	100	0.137

Wavelength $λ$ , µm	$I$ , $% / W$	$R$	$Δ λ$ , nm	$Δ θ$ , deg	$f_{τ}$ , MHz
8	2.4	305	25	3.7	31
10	1.5	245	40	4.1	25
12	1.1	205	60	4.5	21

Crystal	Optical Transparency Range Boundaries, µm		$n_{o}$	$n_{e}$	$Δ n$
${H g}_{2} {C l}_{2}$	$λ_{min}$	0.38	2.122	3.190	1.068
${H g}_{2} {C l}_{2}$	$λ_{max}$	20	1.898	2.444	0.546
${H g}_{2} {B r}_{2}$	$λ_{min}$	0.42	2.305	3.703	1.398
${H g}_{2} {B r}_{2}$	$λ_{max}$	30	2.033	2.700	0.667
${H g}_{2} I_{2}$	$λ_{min}$	0.53	2.546	4.560	2.014
${H g}_{2} I_{2}$	$λ_{max}$	40	2.254	3.210	0.956

$p_{e f f}$	$M_{2}$ , ${H g}_{2} {B r}_{2}$ , exp. $10^{- 15} s^{3} / k g$	$p_{e f f}$ , ${H g}_{2} {B r}_{2}$ , exp.	$M_{2}$ , ${H g}_{2} {C l}_{2}$ , theor. $10^{- 15} s^{3} / k g$	$p_{e f f}$ , ${H g}_{2} {C l}_{2}$ [1]
$(p_{11} + p_{12} + 2 p_{66}) / 2$	$645 \pm 35$	$0.60 \pm 0.03$	270	0.543
$p_{31}$	$235 \pm 35$	$0.13 \pm 0.01$	100	0.137

Evgeniy Dyakonov	https://orcid.org/0000-0002-3554-8434
Dmitriy Porokhovnichenko	https://orcid.org/0000-0003-0633-2535
Vladimir Balakshy	https://orcid.org/0000-0001-5102-4609

Abstract

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Figures (9)

Tables (4)

Equations (10)

Applied Optics