DC-field-assisted grating formation and nonlinear diffractions in methyl-red dye-doped blue phase liquid crystals

Iam Choon Khoo

doi:10.1364/OL.40.000060

DC-field-assisted grating formation and nonlinear diffractions in methyl-red dye-doped blue phase liquid crystals

Iam Choon Khoo

Electrical Engineering

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

25 Scopus citations

Abstract

We report the observation of enhanced nonlinear optical responses of methyl-red-doped blue-phase liquid crystals by application of a DC field. We have observed strong multi-order nonlinear grating diffractions characterized by a nonlinear index coefficient n₂ ∼ 0.5 cm²/W using unfocused CW laser power of ∼1 mW and a DC field of a few V/μm. The underlying mechanisms are crystalline lattice and director axis reorientations by torques exerted by the DC field and photo-excited dye molecules.

Original language	English (US)
Pages (from-to)	60-63
Number of pages	4
Journal	Optics Letters
Volume	40
Issue number	1
DOIs	https://doi.org/10.1364/OL.40.000060
State	Published - Jan 1 2015

All Science Journal Classification (ASJC) codes

Atomic and Molecular Physics, and Optics

Access to Document

10.1364/OL.40.000060

Cite this

@article{4227a7239941418095ae2ea1ead26a19,

title = "DC-field-assisted grating formation and nonlinear diffractions in methyl-red dye-doped blue phase liquid crystals",

abstract = "We report the observation of enhanced nonlinear optical responses of methyl-red-doped blue-phase liquid crystals by application of a DC field. We have observed strong multi-order nonlinear grating diffractions characterized by a nonlinear index coefficient n2 ∼ 0.5 cm2/W using unfocused CW laser power of ∼1 mW and a DC field of a few V/μm. The underlying mechanisms are crystalline lattice and director axis reorientations by torques exerted by the DC field and photo-excited dye molecules.",

author = "Khoo, \{Iam Choon\}",

note = "Publisher Copyright: {\textcopyright} 2014 Optical Society of America.",

year = "2015",

month = jan,

day = "1",

doi = "10.1364/OL.40.000060",

language = "English (US)",

volume = "40",

pages = "60--63",

journal = "Optics Letters",

issn = "0146-9592",

publisher = "Optica Publishing Group (formerly OSA)",

number = "1",

}

TY - JOUR

T1 - DC-field-assisted grating formation and nonlinear diffractions in methyl-red dye-doped blue phase liquid crystals

AU - Khoo, Iam Choon

PY - 2015/1/1

Y1 - 2015/1/1

N2 - We report the observation of enhanced nonlinear optical responses of methyl-red-doped blue-phase liquid crystals by application of a DC field. We have observed strong multi-order nonlinear grating diffractions characterized by a nonlinear index coefficient n2 ∼ 0.5 cm2/W using unfocused CW laser power of ∼1 mW and a DC field of a few V/μm. The underlying mechanisms are crystalline lattice and director axis reorientations by torques exerted by the DC field and photo-excited dye molecules.

AB - We report the observation of enhanced nonlinear optical responses of methyl-red-doped blue-phase liquid crystals by application of a DC field. We have observed strong multi-order nonlinear grating diffractions characterized by a nonlinear index coefficient n2 ∼ 0.5 cm2/W using unfocused CW laser power of ∼1 mW and a DC field of a few V/μm. The underlying mechanisms are crystalline lattice and director axis reorientations by torques exerted by the DC field and photo-excited dye molecules.

UR - https://www.scopus.com/pages/publications/84920053884

UR - https://www.scopus.com/pages/publications/84920053884#tab=citedBy

U2 - 10.1364/OL.40.000060

DO - 10.1364/OL.40.000060

M3 - Article

AN - SCOPUS:84920053884

SN - 0146-9592

VL - 40

SP - 60

EP - 63

JO - Optics Letters

JF - Optics Letters

IS - 1

ER -

DC-field-assisted grating formation and nonlinear diffractions in methyl-red dye-doped blue phase liquid crystals

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this