Design and numerical investigation of a tapered tellurite step-index fiber for mid-IR supercontinuum generation

Than Singh Saini; Hoa Phuoc Trung Nguyen; Xing Luo; Tong Hoang Tong; Takenobu Suzuki; Yasutake Ohishi

doi:10.1117/12.2509028

4 March 2019 Design and numerical investigation of a tapered tellurite step-index fiber for mid-IR supercontinuum generation

Than Singh Saini, Hoa Phuoc Trung Nguyen, Xing Luo, Tong Hoang Tong, Takenobu Suzuki, Yasutake Ohishi

Author Affiliations +

Proceedings Volume 10902, Nonlinear Frequency Generation and Conversion: Materials and Devices XVIII; 109021R (2019) https://doi.org/10.1117/12.2509028
Event: SPIE LASE, 2019, San Francisco, California, United States

Abstract

The mid-infrared (mid-IR) spectral region is very important topic of research because the molecular fingerprint of most of the molecules find in this region. Therefore, the mid-IR supercontinuum has been of great interest for the application of spectroscopic chemical sensing, metrology, and hyper-spectral imaging. Presently available mid-IR light sources such as optical parametric oscillators, quantum cascade lasers, thermal emitters and synchrotron radiation are not suitable for such mid-IR applications where we require broadband, spatial coherence, portable and high brightness of laser sources. Supercontinuum generation using the optical fibers has been one of the prominent approaches to obtain broadband mid- IR light sources. In this work, we have numerically investigated an all-normal dispersion engineered tapered tellurite step-index fiber structure for the generation of coherent supercontinuum spectrum in the mid-IR region. Supercontinuum spectrum spanning 1.04 – 4.34 μm is obtained by 200 fs laser pulse pumping of coupled peak power of 44 kW at 2.0 μm. Broadband and coherent mid-IR supercontinuum light is generated in a 4 cm long tapered step-index tellurite fiber. Coherent mid-IR supercontinuum spectrum reported in this work is expected to have potential applications for a variety of important applications in various fields including imaging, early cancer detection, sensing, and precision spectroscopy.

Citation Download Citation

Than Singh Saini, Hoa Phuoc Trung Nguyen, Xing Luo, Tong Hoang Tong, Takenobu Suzuki, and Yasutake Ohishi "Design and numerical investigation of a tapered tellurite step-index fiber for mid-IR supercontinuum generation", Proc. SPIE 10902, Nonlinear Frequency Generation and Conversion: Materials and Devices XVIII, 109021R (4 March 2019); https://doi.org/10.1117/12.2509028

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