Efficient cascade Raman source in methane-filled hollow-core fibers operating at 2.8 um

Zhixian Li; Wei Huang; Yulong Cui; Zefeng Wang

doi:10.1117/12.2500868

5 November 2018 Efficient cascade Raman source in methane-filled hollow-core fibers operating at 2.8 μm

Zhixian Li, Wei Huang, Yulong Cui, Zefeng Wang

Proceedings Volume 10811, High-Power Lasers and Applications IX; 108110P (2018) https://doi.org/10.1117/12.2500868
Event: SPIE/COS Photonics Asia, 2018, Beijing, China

Abstract

We report here a novel two-stage approach Raman cascade laser source operating at 2.8 μm. In the first stage, a pulsed pump laser at 1064.6 nm is coupled into a methane-filled hollow-core fiber and efficiently transfer to 1st Stokes wave at 1543.9 nm. The quantum efficiency is ~ 87%, which is achieved in 2 bar methane pressure and 2 m fiber length. In the second stage, the 1st Stokes wave is coupled into another methane-filled hollow-core fiber as the pump source, 2nd Stokes wave at 2.8 μm is obtained with a high quantum efficiency of ~75%, which is achieved in 11 bar methane and 2.2 m fiber length. The record total quantum efficiency (from the 1064 nm pump laser to Stokes wave at 2.8 μm) of ~ 65% is achieved, which is 1.6 times the previous reported value. This kind of gas filled hollow-core cascade Raman laser source provides a potential method to obtain high efficiency mid-infrared laser sources with low threshold in various applications.

Citation Download Citation

Zhixian Li, Wei Huang, Yulong Cui, and Zefeng Wang "Efficient cascade Raman source in methane-filled hollow-core fibers operating at 2.8 μm", Proc. SPIE 10811, High-Power Lasers and Applications IX, 108110P (5 November 2018); https://doi.org/10.1117/12.2500868

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