Close

Search

Search Menu
Photonics Media Photonics Buyers' Guide Photonics EDU Photonics Spectra BioPhotonics EuroPhotonics Industrial Photonics Photonics Showcase Photonics ProdSpec Photonics Handbook
More News
SPECIAL ANNOUNCEMENT
2016 Photonics Buyers' Guide Clearance! – Use Coupon Code FC16 to save 60%!
share
Email Facebook Twitter Google+ LinkedIn Comments

Dual-Wavelength Pumping Tested

Photonics Spectra
Mar 2003
A team from Universidade Federal de Pernambuco in Recife, Brazil, CETUC-PUC Rio in Rio de Janeiro, Brazil, and Acreo AB in Stockholm, Sweden, presented its findings on a dual-wavelength pumping technique for Tm:fiber amplifiers in the February issue of IEEE Photonics Technology Letters. Using optical frequency domain reflectometry, the group also examined the effects of fiber length on gain.

The pumping scheme featured an Yb:fiber laser emitting at 1050 nm in the forward direction and a Ti:sapphire at approximately 800 nm in the backward direction to depopulate the lower laser level and to directly populate the upper level, respectively, which boosted the population inversion. In tests with a 15-m fiber amplifier, 180 mW of total pump power produced a small-signal gain of 27 dB. Reflectometry data taken on an 18-m amplifier indicated that a 16-m length would be sufficient for the same performance in the counterpropagation configuration.


Comments
Terms & Conditions Privacy Policy About Us Contact Us
back to top

Facebook Twitter Instagram LinkedIn YouTube RSS
©2016 Photonics Media
x Subscribe to Photonics Spectra magazine - FREE!