Titanium Dioxide Langmuir&#x2013;Blodgett Film Saturable Absorber for Passively Q-switched Nd:GdVO<sub>4</sub> Laser

Titanium Dioxide Langmuir&#x2013;Blodgett Film Saturable Absorber for Passively Q-switched Nd:GdVO<sub>4</sub> Laser

A high-transmittance ultra-thin titanium dioxide (TiO2) film saturable absorber (SA) fabricated by Langmuir-Blodgett (LB) technology is reported and used for the first time to obtain passively Q-switched pulses from a solid-state laser. The optical loss of pure TiO<sub>2</sub> LB film at...

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Bibliographic Details
Main Authors: Xi Wang, Yonggang Wang, Yuzong Gu, Lu Li, Jiang Wang, Xiguang Yang, Zhendong Chen
Format: Article
Language:English
Published: IEEE 2019-01-01
Series:IEEE Photonics Journal
Subjects:
Q-switched laser
saturable absorber
solid-state laser
nonlinear optical materials.
Online Access:https://ieeexplore.ieee.org/document/8653901/
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spelling doaj-6c3b77f20c1046d5bdb39168b82b428a2021-03-29T17:54:45ZengIEEEIEEE Photonics Journal1943-06552019-01-0111211010.1109/JPHOT.2019.29002728653901Titanium Dioxide Langmuir&#x2013;Blodgett Film Saturable Absorber for Passively Q-switched Nd:GdVO<sub>4</sub> LaserXi Wang0https://orcid.org/0000-0001-6055-1806Yonggang Wang1Yuzong Gu2Lu Li3Jiang Wang4https://orcid.org/0000-0002-3969-9459Xiguang Yang5Zhendong Chen6National Demonstration Center for Experimental Physics and Electronics Education, School of Physics and Electronics, Henan University, Kaifeng, ChinaSchool of Physics and Information Technology, Shaanxi Normal University, Xi&#x0027;an, ChinaSchool of Physics and Electronics, Henan University, Kaifeng, ChinaSchool of Science, Xi&#x0027;an University of Posts and Telecommunications, Xi&#x0027;an, ChinaSchool of Physics and Information Technology, Shaanxi Normal University, Xi&#x0027;an, ChinaSchool of Physics and Information Technology, Shaanxi Normal University, Xi&#x0027;an, ChinaSchool of Physics and Information Technology, Shaanxi Normal University, Xi&#x0027;an, ChinaA high-transmittance ultra-thin titanium dioxide (TiO2) film saturable absorber (SA) fabricated by Langmuir-Blodgett (LB) technology is reported and used for the first time to obtain passively Q-switched pulses from a solid-state laser. The optical loss of pure TiO<sub>2</sub> LB film at a wavelength of 1 &#x03BC;m is only 6.5%, and the nonlinear modulation depth, saturation intensity, and non-saturable loss of the entire TiO<sub>2</sub> SA device are 4.3%, 0.125 MW/cm<sup>2</sup>, and 9.8%, respectively. Intrinsic high stability and heat resistance of TiO<sub>2</sub> nanomaterials contribute to a laser output with average power (2.35 W) and a corresponding laser pulse width and repetition rate of 173 ns and 2.008 MHz, respectively. The laser output with the pulse energy of 1.17 &#x03BC;J and peak power of 6.76 W indicates the excellent potential of TiO<sub>2</sub> nanomaterials for applications in solid-state pulsed lasers.https://ieeexplore.ieee.org/document/8653901/Q-switched lasersaturable absorbersolid-state lasernonlinear optical materials.
collection DOAJ
language English
format Article
sources DOAJ
author Xi Wang
Yonggang Wang
Yuzong Gu
Lu Li
Jiang Wang
Xiguang Yang
Zhendong Chen
spellingShingle Xi Wang
Yonggang Wang
Yuzong Gu
Lu Li
Jiang Wang
Xiguang Yang
Zhendong Chen
Titanium Dioxide Langmuir&#x2013;Blodgett Film Saturable Absorber for Passively Q-switched Nd:GdVO<sub>4</sub> Laser
IEEE Photonics Journal
Q-switched laser
saturable absorber
solid-state laser
nonlinear optical materials.
author_facet Xi Wang
Yonggang Wang
Yuzong Gu
Lu Li
Jiang Wang
Xiguang Yang
Zhendong Chen
author_sort Xi Wang
title Titanium Dioxide Langmuir&#x2013;Blodgett Film Saturable Absorber for Passively Q-switched Nd:GdVO<sub>4</sub> Laser
title_short Titanium Dioxide Langmuir&#x2013;Blodgett Film Saturable Absorber for Passively Q-switched Nd:GdVO<sub>4</sub> Laser
title_full Titanium Dioxide Langmuir&#x2013;Blodgett Film Saturable Absorber for Passively Q-switched Nd:GdVO<sub>4</sub> Laser
title_fullStr Titanium Dioxide Langmuir&#x2013;Blodgett Film Saturable Absorber for Passively Q-switched Nd:GdVO<sub>4</sub> Laser
title_full_unstemmed Titanium Dioxide Langmuir&#x2013;Blodgett Film Saturable Absorber for Passively Q-switched Nd:GdVO<sub>4</sub> Laser
title_sort titanium dioxide langmuir&#x2013;blodgett film saturable absorber for passively q-switched nd:gdvo<sub>4</sub> laser
publisher IEEE
series IEEE Photonics Journal
issn 1943-0655
publishDate 2019-01-01
description A high-transmittance ultra-thin titanium dioxide (TiO2) film saturable absorber (SA) fabricated by Langmuir-Blodgett (LB) technology is reported and used for the first time to obtain passively Q-switched pulses from a solid-state laser. The optical loss of pure TiO<sub>2</sub> LB film at a wavelength of 1 &#x03BC;m is only 6.5%, and the nonlinear modulation depth, saturation intensity, and non-saturable loss of the entire TiO<sub>2</sub> SA device are 4.3%, 0.125 MW/cm<sup>2</sup>, and 9.8%, respectively. Intrinsic high stability and heat resistance of TiO<sub>2</sub> nanomaterials contribute to a laser output with average power (2.35 W) and a corresponding laser pulse width and repetition rate of 173 ns and 2.008 MHz, respectively. The laser output with the pulse energy of 1.17 &#x03BC;J and peak power of 6.76 W indicates the excellent potential of TiO<sub>2</sub> nanomaterials for applications in solid-state pulsed lasers.
topic Q-switched laser
saturable absorber
solid-state laser
nonlinear optical materials.
url https://ieeexplore.ieee.org/document/8653901/
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