Second-order cascaded frequency shifting and signal amplification in organic and inorganic crystals

Gian Piero Banfi; P. K. Datta; Ilaria Cristiani; D. Fortusini; Vittorio Degiorgio; John N. Sherwood

doi:10.1117/12.347986

28 April 1999 Second-order cascaded frequency shifting and signal amplification in organic and inorganic crystals

Gian Piero Banfi, P. K. Datta, Ilaria Cristiani, D. Fortusini, Vittorio Degiorgio, John N. Sherwood

Proceedings Volume 3666, International Conference on Fiber Optics and Photonics: Selected Papers from Photonics India '98; (1999) https://doi.org/10.1117/12.347986
Event: International Conference on Fiber Optics and Photonics: Selected Papers from Photonics India '98, 1998, New Delhi, India

Abstract

We report wavelength shifting (generation of a pulse at the wavelength (lambda) _p - (Delta) (lambda) from a signal at (lambda) _p + (Delta) (lambda) under the action of a pump at (lambda) _p) and parametric amplification through a cascaded second order process in a periodically poled lithium niobate crystal and also in an organic crystal N-(4-nitrophenyl)-L- prolinol (NPP). NPP could convert signal pulse (from 1.16 to 1.14 micrometer) with unit gain under the action of a pump pulse (at 1.15 micrometer) of peak intensity as low as 9 MW/cm². In the limit of negligible conversion, where the cascading effect can be described through an effective (chi) ⁽³), we derive for NPP(chi) _eff⁽³) approximately equals 2.4 X 10^-17 m²/V², which is approximately 10² larger than (chi) ⁽³) of conjugated polymers or semiconductors. In a 19 mm long PPLN sample, at (lambda) _p equals 1.8 micrometer and (Delta) (lambda) as large as 60 nm, we could obtain unit gain with a pump intensity of 6 MW/cm², while amplification by a factor of 10 requires 18 MW/cm². We also present a theoretical comparison between frequency mixing and cascading.

Citation Download Citation

Gian Piero Banfi, P. K. Datta, Ilaria Cristiani, D. Fortusini, Vittorio Degiorgio, and John N. Sherwood "Second-order cascaded frequency shifting and signal amplification in organic and inorganic crystals", Proc. SPIE 3666, International Conference on Fiber Optics and Photonics: Selected Papers from Photonics India '98, (28 April 1999); https://doi.org/10.1117/12.347986

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