List of works - Karl Unterrainer

Active photonic crystal terahertz laser

scientific article

All-optical adaptive control of quantum cascade random lasers

scientific article published on 02 November 2020

Analysis of sub-picosecond mid-infrared pulse propagation in a quantum cascade laser below and above threshold

scholarly article published June 2009

Band-warping-induced transverse population inversion of hot heavy holes in germanium at high electric fields

scientific article published on 01 October 1995

Barrier Height Tuning of Terahertz Quantum Cascade Lasers for High-Temperature Operation

scientific article published on 17 October 2018

Broadband terahertz amplification in a heterogeneous quantum cascade laser

scientific article published on February 2015

CEP-stable tunable THz-emission originating from laser-waveform-controlled sub-cycle plasma-electron bursts. ⬇️

scientific article published on June 2015

Coherent and incoherent intersubband dynamics

article

Coherent vs. incoherent charge transport in semiconductor quantum cascade structures

Coupled cavity terahertz quantum cascade lasers with integrated emission monitoring.

scientific article published on February 2015

Crossed-field hot-hole cyclotron resonance in p-Ge: nonparabolic and quantum effects

Direct evidence for the role of streaming motion in the hot-hole p-Ge laser

Direct measurement of intersubband dynamics

article

Disk patch resonators for cavity quantum electrodynamics at the terahertz frequency

scientific article published in May 2017

Dispersion in a broadband terahertz quantum cascade laser

Dynamically phase-matched terahertz generation

scientific article

Effect of valence-band anisotropy and nonparabolicity on total scattering rates for holes in nonpolar semiconductors

scientific article published on 01 May 1994

Electric and magnetic dipole two-photon absorption in semiconductors

scientific article published on 01 September 1996

Electrical field mapping in InGaP HEMTs and GaAs terahertz emitters using backside infrared OBIC technique

Electrically controllable photonic molecule laser

scientific article

Exceptionally Narrow-Band Quantum Dot Infrared Photodetector

scientific article published in October 2012

Excitation of terahertz surface plasmon polaritons on etched groove gratings

Excite-probe determination of the intersubband lifetime in wide GaAs/AlGaAs quantum wells using a far-infrared free-electron laser

scientific article published in August 1994

Far‐infrared pump‐probe measurements of the intersubband lifetime in an AlGaAs/GaAs coupled‐quantum well

Few-cycle THZ spectroscopy of semiconductor quantum structures

Few-cycle THz generation for imaging and tomography applications

scientific article

Few-cycle THz spectroscopy of nanostructures

Free-carrier absorption in quantum cascade structures

scientific article published on 22 February 2012

GaAs/AlGaAs microresonator quantum cascade lasers

GaAs/AlGaAs quantum cascade laser – a source for gas absorption spectroscopy

Gain and losses in THz quantum cascade laser with metal-metal waveguide.

scientific article

Gas absorption spectroscopy using GaAs/AlGaAs quantum cascade lasers and a hollow waveguide absorption cell

Gating of light- matter interaction in quantum cascade lasers with 10 fs time resolution

High Intensity p-Ge Tunable Cyclotron Resonance Laser

High-Power Growth-Robust InGaAs/InAlAs Terahertz Quantum Cascade Lasers

scientific article

High-energy diode side-pumped Er:LiYF4 laser.

scientific article published in February 2018

Hot-carrier quantum distribution function in crossed electric and magnetic fields

scientific article published on 01 March 1989

Imaging with a Terahertz quantum cascade laser

scientific article

Improved performance of GaAs-AlGaAs superlattice quantum cascade lasers beyond /spl lambda/=13 μm

article published in 2000

InGaAs/InGaAlAs/InAs/InP very selective quantum dot infrared photodetector for 12 µm

scientific article published in October 2009

Influence of impurity absorption on germanium hot-hole laser spectra

scientific article published in May 1994

Intersubband absorption dynamics in coupled quantum wells

article published in 2001

Intersubband and interminiband GaAs/AlGaAs quantum cascade lasers at

Intersubband dynamics of asymmetric quantum wells studied by THz `optical rectification'

article published in 1996

Intersubband gain-induced dispersion

scientific article

Intersubband relaxation dynamics in semiconductor quantum structures

article

Intersubband scattering of cold electrons in a coupled quantum well with subband spacing below ℏωLO

article by J.N. Heyman et al published July 1998 in Physica E: Low-Dimensional Systems and Nanostructures

Intersubband transport in quantum wells in strong magnetic fields mediated by single- and two-electron scattering.

scientific article published on 20 May 2002

Intraband Auger effect in InAs/InGaAlAs/InP quantum dot structures

scientific article published in May 2009

Intrinsic response time of graphene photodetectors.

scientific article

Inverse Bloch Oscillator: Strong Terahertz-Photocurrent Resonances at the Bloch Frequency

scientific article published on 01 April 1996

Landau level laser

scientific article

Magnetic-field-enhanced quantum-cascade emission

Magneto-optical Terahertz emission from plasmons in parabolic quantum wells

Materials science in the far-IR with electrostatic based FELs

scholarly article by S.J. Allen et al published April 1995 in Nuclear Instruments and Methods in Physics Research

Metallic wave-impedance matching layers for broadband terahertz optical systems

scientific article published on 01 May 2007

Microcavity-integrated graphene photodetector.

scientific article published on 10 May 2012

Monitoring the ultrafast electric field change at a mid-infrared plasma Bragg mirror

scientific article published on 01 October 2001

Nonlinear resonant optical rectification in a coupled quantum well

Numerical sampling rules for paraxial regime pulse diffraction calculations

scientific article published on 01 September 2008

Observation of two emission lines in the p-type-Ge cyclotron resonance laser

scientific article published in 1994

Optical rectification as a probe of quantum dynamics in a heterostructure

Phase-resolved measurements of stimulated emission in a laser

scientific article

Photoconductive response of InAs/GaAs quantum dot stacks

Probing scattering mechanisms with symmetric quantum cascade lasers

scientific article

Pulse generation and spectral optimization of broadband terahertz quantum cascade lasers

Quantum cascade lasers with monolithic air–semiconductor Bragg reflectors

Resonant Tunneling Mediated by Resonant Emission of Intersubband Plasmons

scientific article published on 01 March 2001

Resonant metamaterial detectors based on THz quantum-cascade structures.

scientific article

Reversing the pump dependence of a laser at an exceptional point.

scientific article

Rotating polarization spectroscopy for single nano-antenna characterization.

scientific article

Sampling a terahertz dipole transition with subcycle time resolution

scientific article published on 01 February 2000

Self-aligned coupled cavity GaAs/AlGaAs midinfrared quantum-cascade laser

article published in 2000

Short pulse generation and mode control of broadband terahertz quantum cascade lasers ⬇️

Simultaneous positive and negative photocurrent response in asymmetric quantum dot infrared photodetectors

scientific article published on 28 January 2013

Spectrally resolved far-fields of terahertz quantum cascade lasers.

scientific article

Spectroscopy in the gas phase with GaAs/AlGaAs quantum-cascade lasers.

scientific article

Stimulated emission fromp‐Ge due to transitions between light‐hole Landau levels and excited states of shallow impurities

scientific article published on 13 April 1992

Subwavelength micropillar array terahertz lasers

scientific article

Surface-modified GaAs terahertz plasmon emitter

THz quantum cascade lasers with wafer bonded active regions.

scientific article

THz time domain spectroscopy of surface electromagnetic waves

THz-driven nonlinear intersubband dynamics in quantum wells.

scientific article

Temperature and Intensity Dependence of Intersubband Relaxation Rates from Photovoltage and Absorption

scientific article published in Physical Review Letters

Terahertz Quantum Cascade Devices: From Intersubband Transition to Microcavity Laser

scientific article published in 2008

Terahertz meta-atoms coupled to a quantum well intersubband transition

scientific article

Terahertz photonic crystal resonators in double-metal waveguides.

scientific article

Terahertz quantum cascade structures: Intra- versus interwell transition

Terahertz spectroscopy of double metal quantum cascade structures

Terahertz subwavelength waveguide emitters

Terahertz surface plasmon on chirped groove grating

Terahertz waveguide emitter with subwavelength confinement

Terahertz waveguide emitters for investigation of subwavelength structures

The lower branch of plasmon-phonon coupled modes

Time resolved spectroscopy of dynamics in mid infrared quantum cascade lasers below and above threshold

scholarly article published June 2007

Time-domain spectroscopy of mid-infrared quantum cascade lasers

Tunable cyclotron-resonance laser in germanium

scientific article published on 01 May 1990

Two-photon absorption in GaAs/AlGaAs multiple quantum wells

scientific article published on 01 June 1989

Ultrafast Spectroscopy As A Probe Of Light-Matter Interaction In A Midinfrared Quantum Cascade Laser

Ultrafast coherent electron transport in semiconductor quantum cascade structures.

scientific article published on 3 July 2002

Ultrafast phase-resolved pump-probe measurements on a quantum cascade laser

Ultrafast probing of light-matter interaction in a midinfrared quantum cascade laser

Ultrafast probing of the complex refractive index in an active mid infrared quantum cascade laser

Voltage-controlled intracavity terahertz generator for self-starting Ti:sapphire lasers

scientific article

List of works by Karl Unterrainer

Active photonic crystal terahertz laser

All-optical adaptive control of quantum cascade random lasers

Analysis of sub-picosecond mid-infrared pulse propagation in a quantum cascade laser below and above threshold

Band-warping-induced transverse population inversion of hot heavy holes in germanium at high electric fields

Barrier Height Tuning of Terahertz Quantum Cascade Lasers for High-Temperature Operation

Broadband terahertz amplification in a heterogeneous quantum cascade laser

CEP-stable tunable THz-emission originating from laser-waveform-controlled sub-cycle plasma-electron bursts. ⬇️

Coherent and incoherent intersubband dynamics

Coherent vs. incoherent charge transport in semiconductor quantum cascade structures

Coupled cavity terahertz quantum cascade lasers with integrated emission monitoring.

Crossed-field hot-hole cyclotron resonance in p-Ge: nonparabolic and quantum effects

Direct evidence for the role of streaming motion in the hot-hole p-Ge laser

Direct measurement of intersubband dynamics

Disk patch resonators for cavity quantum electrodynamics at the terahertz frequency

Dispersion in a broadband terahertz quantum cascade laser

Dynamically phase-matched terahertz generation

Effect of valence-band anisotropy and nonparabolicity on total scattering rates for holes in nonpolar semiconductors

Electric and magnetic dipole two-photon absorption in semiconductors

Electrical field mapping in InGaP HEMTs and GaAs terahertz emitters using backside infrared OBIC technique

Electrically controllable photonic molecule laser

Exceptionally Narrow-Band Quantum Dot Infrared Photodetector

Excitation of terahertz surface plasmon polaritons on etched groove gratings

Excite-probe determination of the intersubband lifetime in wide GaAs/AlGaAs quantum wells using a far-infrared free-electron laser

Far‐infrared pump‐probe measurements of the intersubband lifetime in an AlGaAs/GaAs coupled‐quantum well

Few-cycle THZ spectroscopy of semiconductor quantum structures

Few-cycle THz generation for imaging and tomography applications

Few-cycle THz spectroscopy of nanostructures

Free-carrier absorption in quantum cascade structures

GaAs/AlGaAs microresonator quantum cascade lasers

GaAs/AlGaAs quantum cascade laser – a source for gas absorption spectroscopy

Gain and losses in THz quantum cascade laser with metal-metal waveguide.

Gas absorption spectroscopy using GaAs/AlGaAs quantum cascade lasers and a hollow waveguide absorption cell

Gating of light- matter interaction in quantum cascade lasers with 10 fs time resolution

High Intensity p-Ge Tunable Cyclotron Resonance Laser

High-Power Growth-Robust InGaAs/InAlAs Terahertz Quantum Cascade Lasers

High-energy diode side-pumped Er:LiYF4 laser.

Hot-carrier quantum distribution function in crossed electric and magnetic fields

Imaging with a Terahertz quantum cascade laser

Improved performance of GaAs-AlGaAs superlattice quantum cascade lasers beyond /spl lambda/=13 μm

InGaAs/InGaAlAs/InAs/InP very selective quantum dot infrared photodetector for 12 µm

Influence of impurity absorption on germanium hot-hole laser spectra

Intersubband absorption dynamics in coupled quantum wells

Intersubband and interminiband GaAs/AlGaAs quantum cascade lasers at

Intersubband dynamics of asymmetric quantum wells studied by THz `optical rectification'

Intersubband gain-induced dispersion

Intersubband relaxation dynamics in semiconductor quantum structures

Intersubband scattering of cold electrons in a coupled quantum well with subband spacing below ℏωLO

Intersubband transport in quantum wells in strong magnetic fields mediated by single- and two-electron scattering.

Intraband Auger effect in InAs/InGaAlAs/InP quantum dot structures

Intrinsic response time of graphene photodetectors.

Inverse Bloch Oscillator: Strong Terahertz-Photocurrent Resonances at the Bloch Frequency

Landau level laser

Magnetic-field-enhanced quantum-cascade emission

Magneto-optical Terahertz emission from plasmons in parabolic quantum wells

Materials science in the far-IR with electrostatic based FELs

Metallic wave-impedance matching layers for broadband terahertz optical systems

Microcavity-integrated graphene photodetector.

Monitoring the ultrafast electric field change at a mid-infrared plasma Bragg mirror

Nonlinear resonant optical rectification in a coupled quantum well

Numerical sampling rules for paraxial regime pulse diffraction calculations

Observation of two emission lines in the p-type-Ge cyclotron resonance laser

Optical rectification as a probe of quantum dynamics in a heterostructure

Phase-resolved measurements of stimulated emission in a laser

Photoconductive response of InAs/GaAs quantum dot stacks

Probing scattering mechanisms with symmetric quantum cascade lasers

Pulse generation and spectral optimization of broadband terahertz quantum cascade lasers

Quantum cascade lasers with monolithic air–semiconductor Bragg reflectors

Resonant Tunneling Mediated by Resonant Emission of Intersubband Plasmons

Resonant metamaterial detectors based on THz quantum-cascade structures.

Reversing the pump dependence of a laser at an exceptional point.

Rotating polarization spectroscopy for single nano-antenna characterization.

Sampling a terahertz dipole transition with subcycle time resolution

Self-aligned coupled cavity GaAs/AlGaAs midinfrared quantum-cascade laser

Short pulse generation and mode control of broadband terahertz quantum cascade lasers ⬇️

Simultaneous positive and negative photocurrent response in asymmetric quantum dot infrared photodetectors

Spectrally resolved far-fields of terahertz quantum cascade lasers.

Spectroscopy in the gas phase with GaAs/AlGaAs quantum-cascade lasers.

Stimulated emission fromp‐Ge due to transitions between light‐hole Landau levels and excited states of shallow impurities

Subwavelength micropillar array terahertz lasers