Details

Autor(en) / Beteiligte

• Zhang, Jinwei
• Wang, Qing
• Hao, Jingjie
• Liu, Heyan
• Yao, Jiyong
• Li, Zhuang
• Liu, Jie
• Mak, Ka Fai

Titel

Broadband, few-cycle mid-infrared continuum based on the intra-pulse difference frequency generation with BGSe crystals

Ist Teil von

• Optics express, 2020-12, Vol.28 (25), p.37903-37909

Ort / Verlag

United States

Erscheinungsjahr

2020

Quelle

Electronic Journals Library

Beschreibungen/Notizen

• We demonstrate for the first time the generation of octave-spanning mid-infrared using a BGSe nonlinear crystal. A Cr:ZnS laser system delivering 28-fs pulses at a central wavelength of 2.4 µm is used as the pump source, which drives the intra-pulse difference frequency generation inside the BGSe crystal. As a result, a coherent broadband mid-infrared continuum spanning from 6 to 18 µm has been obtained. It shows that the BGSe crystal is a promising material for broadband, few-cycle mid-infrared generation via frequency down conversion with femtosecond pump sources.