Yb/Er phosphate optical glasses and fibers for eye-safe compact optical amplifiers in LIDARs (Conference Presentation)

Nadia G. Boetti; Diego Pugliese; Duccio Gallichi Nottiani; Davide Janner; Federico Leone; Gabriele Coppola; Gabriele Tombesi; Chiara Novara; Daniel Milanese

doi:10.1117/12.2509892

5 March 2019 Yb/Er phosphate optical glasses and fibers for eye-safe compact optical amplifiers in LIDARs (Conference Presentation)

Nadia G. Boetti, Diego Pugliese, Duccio Gallichi Nottiani, Davide Janner, Federico Leone, Gabriele Coppola, Gabriele Tombesi, Chiara Novara, Daniel Milanese

Author Affiliations +

Proceedings Volume 10914, Optical Components and Materials XVI; 1091414 (2019) https://doi.org/10.1117/12.2509892
Event: SPIE OPTO, 2019, San Francisco, California, United States

Abstract

The development of compact eye-safe optical amplifiers has been recently triggered by the need of airborne LIght Detection And Ranging systems (LIDARs) for environmental monitoring and surveillance. Among potential candidate materials, phosphate glasses can incorporate high amounts of rare earth ions, thus allowing for high optical gain per unit length which would result in few-cm long optical amplifier sections. Another advantage guaranteed by a short length optical amplifier is the possibility to reduce the unwanted non-linear effects, e.g. Stimulated Brillouin Scattering, which cause distortion in the beam profile and affect the performance of the device. We report on the design and fabrication of Yb/Er-doped phosphate glasses to be used as active materials for the core of a waveguide amplifier. The prepared glasses were characterized in their physical and optical properties and the best composition selected for the fabrication of the amplifier. Suitable cladding compositions were explored, and the final core/cladding glass pair was processed by melt-quenching the glasses into the desired shapes: core rods were obtained by casting the glass into preheated cylindrical glass molds, while the cladding glass tubes were fabricated by extrusion using an in-house developed equipment. The optical waveguide was then obtained using a custom induction heated optical fiber drawing tower. Preliminary results of optical amplification are presented for the single stage Master Oscillator Power Amplifier (MOPA), using a CW source as seed laser. The reported activity was carried out in the framework of the NATO Science for Peace and Security project “Caliber”, grant no. SPS G5248.

Conference Presentation

Citation Download Citation

Nadia G. Boetti, Diego Pugliese, Duccio Gallichi Nottiani, Davide Janner, Federico Leone, Gabriele Coppola, Gabriele Tombesi, Chiara Novara, and Daniel Milanese "Yb/Er phosphate optical glasses and fibers for eye-safe compact optical amplifiers in LIDARs (Conference Presentation)", Proc. SPIE 10914, Optical Components and Materials XVI, 1091414 (5 March 2019); https://doi.org/10.1117/12.2509892

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

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
PRESENTATION

WATCH
PRESENTATION SAVE TO MY LIBRARY

GET CITATION

KEYWORDS

Glasses

Optical amplifiers

LIDAR

Optical fibers

Cladding

Waveguides

Environmental monitoring

Show All Keywords

Keywords/Phrases

Search In:

Publication Years