Visible light emission and control by infrared-responsive materials

Mitsunori Saito; Yoshinori Takahashi; Kei Matsuda; Masaaki Yamazaki; Naruhito Sawanobori

doi:10.1117/12.815272

2 December 2008 Visible light emission and control by infrared-responsive materials

Mitsunori Saito, Yoshinori Takahashi, Kei Matsuda, Masaaki Yamazaki, Naruhito Sawanobori

Proceedings Volume 7142, Sixth International Conference on Advanced Optical Materials and Devices (AOMD-6); 714208 (2008) https://doi.org/10.1117/12.815272
Event: Sixth International Conference on Advanced Optical Materials and Devices, 2008, Riga, Latvia

Abstract

Upconversion characteristics of rare-earth cations were utilized for emitting or controlling visible light with infrared light. A fluorescent glass rod was fabricated by using durable AlF₃-based glass that contained high-concentration Er³⁺ cations. This glass rod acted as a two-way wavelength converter; i.e., visible light (~500 nm) was converted to infrared light (~800 nm) as it passed through the glass, and infrared light that propagated in the opposite direction was converted to visible light. An infrared-responsive photochromic compound was fabricated by dispersing spirobenzopyran and upconversion powder (Gd₂O₂S:Yb³⁺Er ³⁺) in photocurable acrylate. When this compound was exposed to ultraviolet light (~370 nm), a strong absorption band appeared in the visible spectral region due to photochromic isomerization of spirobenzopyran. This absorption band disappeared by irradiation of a 940-nm laser beam, since the upconversion powder emitted green light that caused bleaching of colored spirobenzopyran.

Citation Download Citation

Mitsunori Saito, Yoshinori Takahashi, Kei Matsuda, Masaaki Yamazaki, and Naruhito Sawanobori "Visible light emission and control by infrared-responsive materials", Proc. SPIE 7142, Sixth International Conference on Advanced Optical Materials and Devices (AOMD-6), 714208 (2 December 2008); https://doi.org/10.1117/12.815272

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available