Efficient generation of mid-infrared few-cycle pulses by the intrapulse difference-frequency generation in YCOB

Yttrium calcium oxyborate (YCOB) crystals have been widely applied for generating intense near-infrared laser pulses by optical parametric amplification. Here, we show that the YCOB crystals oriented in both the XZ and XY principal planes possess broadband phase-matching property of intrapulse diffe...

Full description

Saved in:
Bibliographic Details
Published in:Optics letters 2022-10, Vol.47 (19), p.5244-5247
Main Authors: Gu, Xingbin, Liu, Jinsheng, Yuan, Peng, Tu, Xiaoniu, Zhang, Dongfang, Wang, Jing, Xie, Guoqiang, Ma, Jingui
Format: Article
Language:English
Subjects:
Broadband
Crystal structure
Infrared lasers
Phase matching
Yttrium
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Yttrium calcium oxyborate (YCOB) crystals have been widely applied for generating intense near-infrared laser pulses by optical parametric amplification. Here, we show that the YCOB crystals oriented in both the XZ and XY principal planes possess broadband phase-matching property of intrapulse difference-frequency generation in the mid-infrared region. Few-cycle pulses tunable from 2 to 4 µm are experimentally produced by using a 7.5-fs pump laser at 800 nm, in which the conversion efficiency can be as high as 2.5%. With a large-size crystal and high-power pump laser, intrapulse difference-frequency generation based on YCOB may provide a new route for directly producing intense few-cycle mid-infrared pulses.
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.473960