Generation of sub cycle terahertz pulses via coherent control of nonlinear medium by femtosecond pulses

R M Arkhipov,A V Pakhomov,M V Arkhipov,A Demircan,I Babushkin,U Morgner,N N Rosanov

doi:10.1088/1742-6596/1571/1/012009

Abstract

In this paper, we revise our recent advances in study of high-efficient methods of sub cycle THz pulse generation and control of their wave shape. These methods are based on coherent control of low frequency oscillations in nonlinear medium excited by infrared femtosecond pulses. Our results showed the possibility of sub – and few-cycle pulse formation of controllable wave shapes: half-cycle, rectangular and triangular and single-cycle ones in THz, XUV and optical ranges.

Highlights

Generation of broadband sub cycle terahertz (THz) waveforms with controllable wave shapes became of great interest in the past decades because of huge amount of possibilities for their applications in ultrafast spectroscopy, imaging, and charges acceleration, see reviews [1,2,3] and references therein
These methods are based on coherent control of low frequency oscillations in nonlinear medium excited by infrared femtosecond pulses
Our results showed the possibility of sub – and few-cycle pulse formation of controllable wave shapes: half-cycle, rectangular and triangular and single-cycle ones in THz, XUV and optical ranges

Summary

Introduction

Generation of broadband sub cycle terahertz (THz) waveforms with controllable wave shapes became of great interest in the past decades because of huge amount of possibilities for their applications in ultrafast spectroscopy, imaging, and charges acceleration, see reviews [1,2,3] and references therein. We revise our recent advances in study of high-efficient methods of sub cycle THz pulse generation and control of their wave shape [4,5,6,7,8,9,10,11,12]. These methods are based on coherent control of low frequency oscillations in nonlinear medium (in particular, Raman Active Medium) excited by infrared femtosecond pulses. We show the possibility of THz pulse formation of controllable wave shapes in THz and XUV ranges

Physical idea of coherently controlled generation of sub cycle THz pulses

Generation of sub-cycle THz pulses in 1D geometry

Conclusions