Observation of birefringence in BBO crystals in the terahertz regime

Shigeki Saito; Elmer Estacio; Tomoharu Nakazato; Yusuke Furukawa; Toshihiko Shimizu; Nobuhiko Sarukura; Marilou Cadatal; Minh Hong Pham; Carlito Ponseca; Hiroshi Mizuseki; Yoshiyuki Kawazoe

doi:10.1016/j.jcrysgro.2008.09.130

Observation of birefringence in BBO crystals in the terahertz regime

Shigeki Saito, Elmer Estacio, Tomoharu Nakazato, Yusuke Furukawa, Toshihiko Shimizu, Nobuhiko Sarukura, Marilou Cadatal, Minh Hong Pham, Carlito Ponseca, Hiroshi Mizuseki, Yoshiyuki Kawazoe

New Industry Creation Hatchery Center (NICHe)

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

We present experimental results of birefringence in beta barium borate (β-BaB₂O₄ or BBO) crystals in the 0.2-1 terahertz (THz) frequency range. Standard polarized THz-transmission spectroscopy of a BBO slab cut under 90° was performed at different azimuthal orientations to determine the ordinary and extraordinary refractive indices. An average Δn/n value of 0.118 was calculated. Moreover, azimuthal angle-dependent absorption was observed at about 0.65 THz, in close agreement with calculations based on first principles. Our calculations showed the absorption feature was due to the low-frequency phonon modes of the [B₃O₆]^3- rings. These results suggest that a BBO-based THz optical-parametric-oscillator design is feasible.

Original language	English
Pages (from-to)	895-898
Number of pages	4
Journal	Journal of Crystal Growth
Volume	311
Issue number	3
DOIs	https://doi.org/10.1016/j.jcrysgro.2008.09.130
Publication status	Published - 2009 Jan 15

Keywords

B1. Beta barium borate
B2. Birefringence
B3. Terahertz

Access to Document

10.1016/j.jcrysgro.2008.09.130

Cite this

@article{97348133af594d4bbf63ee9f1b4cd33d,

title = "Observation of birefringence in BBO crystals in the terahertz regime",

abstract = "We present experimental results of birefringence in beta barium borate (β-BaB2O4 or BBO) crystals in the 0.2-1 terahertz (THz) frequency range. Standard polarized THz-transmission spectroscopy of a BBO slab cut under 90° was performed at different azimuthal orientations to determine the ordinary and extraordinary refractive indices. An average Δn/n value of 0.118 was calculated. Moreover, azimuthal angle-dependent absorption was observed at about 0.65 THz, in close agreement with calculations based on first principles. Our calculations showed the absorption feature was due to the low-frequency phonon modes of the [B3O6]3- rings. These results suggest that a BBO-based THz optical-parametric-oscillator design is feasible.",

keywords = "B1. Beta barium borate, B2. Birefringence, B3. Terahertz",

author = "Shigeki Saito and Elmer Estacio and Tomoharu Nakazato and Yusuke Furukawa and Toshihiko Shimizu and Nobuhiko Sarukura and Marilou Cadatal and Pham, {Minh Hong} and Carlito Ponseca and Hiroshi Mizuseki and Yoshiyuki Kawazoe",

year = "2009",

month = jan,

day = "15",

doi = "10.1016/j.jcrysgro.2008.09.130",

language = "English",

volume = "311",

pages = "895--898",

journal = "Journal of Crystal Growth",

issn = "0022-0248",

publisher = "Elsevier",

number = "3",

}

TY - JOUR

T1 - Observation of birefringence in BBO crystals in the terahertz regime

AU - Saito, Shigeki

AU - Estacio, Elmer

AU - Nakazato, Tomoharu

AU - Furukawa, Yusuke

AU - Shimizu, Toshihiko

AU - Sarukura, Nobuhiko

AU - Cadatal, Marilou

AU - Pham, Minh Hong

AU - Ponseca, Carlito

AU - Mizuseki, Hiroshi

AU - Kawazoe, Yoshiyuki

PY - 2009/1/15

Y1 - 2009/1/15

N2 - We present experimental results of birefringence in beta barium borate (β-BaB2O4 or BBO) crystals in the 0.2-1 terahertz (THz) frequency range. Standard polarized THz-transmission spectroscopy of a BBO slab cut under 90° was performed at different azimuthal orientations to determine the ordinary and extraordinary refractive indices. An average Δn/n value of 0.118 was calculated. Moreover, azimuthal angle-dependent absorption was observed at about 0.65 THz, in close agreement with calculations based on first principles. Our calculations showed the absorption feature was due to the low-frequency phonon modes of the [B3O6]3- rings. These results suggest that a BBO-based THz optical-parametric-oscillator design is feasible.

AB - We present experimental results of birefringence in beta barium borate (β-BaB2O4 or BBO) crystals in the 0.2-1 terahertz (THz) frequency range. Standard polarized THz-transmission spectroscopy of a BBO slab cut under 90° was performed at different azimuthal orientations to determine the ordinary and extraordinary refractive indices. An average Δn/n value of 0.118 was calculated. Moreover, azimuthal angle-dependent absorption was observed at about 0.65 THz, in close agreement with calculations based on first principles. Our calculations showed the absorption feature was due to the low-frequency phonon modes of the [B3O6]3- rings. These results suggest that a BBO-based THz optical-parametric-oscillator design is feasible.

KW - B1. Beta barium borate

KW - B2. Birefringence

KW - B3. Terahertz

UR - http://www.scopus.com/inward/record.url?scp=59749090138&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=59749090138&partnerID=8YFLogxK

U2 - 10.1016/j.jcrysgro.2008.09.130

DO - 10.1016/j.jcrysgro.2008.09.130

M3 - Article

AN - SCOPUS:59749090138

SN - 0022-0248

VL - 311

SP - 895

EP - 898

JO - Journal of Crystal Growth

JF - Journal of Crystal Growth

IS - 3

ER -

Observation of birefringence in BBO crystals in the terahertz regime

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this