Ultrafast control of light emission from a quantum-well semiconductor microcavity using picosecond strain pulses

Abstract

A picosecond strain wave packet of subterahertz acoustic phonons is generated in a metal film by optical excitation with a femtosecond laser pulse and injected into a quantum well containing a GaAs-based planar microcavity in the strong-coupling regime. The strain pulse induces a dynamical energy shift of the quantumwell exciton resonance. This results in an ultrafast modulation of the photoluminescence spectrum from the lower polariton branch.

Optical and photocurrent spectroscopy with picosecond strain pulses

“…The ultrafast piezospectroscopic effect observed in the experiments with picosecond strain pulses opens a new field in optical and photocurrent spectroscopy [10,[13][14][15][16][17]. There the energy of resonant optical transitions is modulated on a picosecond timescale and the amplitude of this modulation exceeds the width of spectral lines in stationary experiments.…”

“…In the present paper, we give an overview of our recent optical and photocurrent spectroscopic experiments with picosecond strain pulse [13][14][15][16][17]. In Section 2 we describe briefly the experimental method for the generation of picosecond strain pulses.…”

Поляризационные эффекты в гетеролазерах In-=SUB=-28-=/SUB=-Ga-=SUB=-72-=/SUB=-As/GaAs на квантовой яме

“…Воздействия переменной деформации на такие структуры с целью изучения изменения и управления частотным спектром излучения проводились в различных диапазонах частот перемен-ной деформации: от ультразвукового до гиперзвуково-го [5][6][7][8][9][10][11].…”

Effects of induced birefringence in nanoscale heterostructures

“…Acoustic studies of optical properties in quantum size heterostructures find increasingly wide applica tion due to the possibility of detecting and studying different effects of both fundamental and applied nature [1][2][3][4][5][6][7][8][9][10][11]. The effect of alternating strain on such structures with the purpose of studying changes in and controlling the frequency emission spectrum was stud ied in different frequency ranges of alternating strain from ultrasonic [1,2,[4][5][6][9][10][11] to hypersonic [3,7,8].…”