Observation of the photoscattering effect from supercontinuum-generating germanosilicate fiber

Haohua Tu; Daniel L. Marks; Stephen A. Boppart M.D.

doi:10.1117/12.763000

13 February 2008 Observation of the photoscattering effect from supercontinuum-generating germanosilicate fiber

Haohua Tu, Daniel L. Marks, Stephen A. Boppart M.D.

Proceedings Volume 6875, Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications VII; 68750Z (2008) https://doi.org/10.1117/12.763000
Event: Lasers and Applications in Science and Engineering, 2008, San Jose, California, United States

Abstract

We observe a photosensitivity apparently different from that associated with fiber grating inscription in a supercontinuum-generating germanosilicate fiber. Transmission of intense femtosecond ~800 nm pulses in the heavily Ge-doped fiber progressively produces a waveguide at the entrance of the fiber. The waveguide behaves as a multi-millimeter long fiber bandpass filter which scatters away light with wavelength shorter or longer than 850 nm. This photosensitivity is therefore termed as the photoscattering effect. A model incorporating color center formation is proposed to explain the underlying mechanism. A 5-photon absorption process likely serves as the common origin of this effect and the ~800 nm photosensitivity producing low-loss waveguides in bulk silica glass and Type I-IR fiber Bragg gratings in side written optical fibers.

Citation Download Citation

Haohua Tu, Daniel L. Marks, and Stephen A. Boppart M.D. "Observation of the photoscattering effect from supercontinuum-generating germanosilicate fiber", Proc. SPIE 6875, Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications VII, 68750Z (13 February 2008); https://doi.org/10.1117/12.763000

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