Vanadium dioxide as a material to control light polarization in the visible and near infrared

详细信息    查看全文

• 作者：Patrick Cormier^a ; Tran Vinh Son^b ; Jacques Thibodeau^a ; Alexandre Doucet^a ; Vo-Van Truong^b ; Alain Haché ; ^a ; ^{hachea@umoncton.ca" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Vanadium dioxide ; Transition metal oxide ; Phase control ; Polarization control ; Adjustable phase retarder ; Light modulator
• 刊名：Optics Communications
• 出版年：2017
• 出版时间：1 January 2017
• 年：2017
• 卷：382
• 期：Complete
• 页码：80-85
• 全文大小：1208 K

文摘

We report on the possible use of vanadium dioxide to produce ultrathin (<100 nm) adjustable phase retarders working over a wide spectral range. The refractive index of vanadium dioxide undergoes large changes when the material undergoes a phase transition from semiconductor to metal at a temperature of 68 °C. In a thin film, the resulting optical phase shift is different for s- and p-polarizations in both reflection and transmission, and under certain conditions the polarization state changes between linear or circular or between linear polarizations oriented differently when the material phase transitions. Specific ultrathin modulators are proposed based on the results.