_version_ 1866908840569602048
author Silvestri, Carlo
Rakić, Aleksandar D.
Indjin, Dragan
Khalatpour, Ali
Jirauschek, Christian
Demic, Aleksandar
Ikonic, Zoran
Dean, Paul
Vuković, Nikola
Radovanović, Jelena
Li, Lianhe
Linfield, Edmund
Jaidl, Michael
Unterrainer, Karl
Scalari, Giacomo
Faist, Jérôme
Columbo, Lorenzo Luigi
Brambilla, Massimo
Piccardo, Marco
Dhillon, Sukhdeep
Roy, Mithun
Burghoff, David
Bertling, Karl
Torniainen, Jari
Qi, Xiaoqiong
Taimre, Thomas
Spitz, Olivier
Grillot, Frédéric
Giglio, Marilena
Sampaolo, Angelo
Patimisco, Pietro
Spagnolo, Vincenzo
Pogna, Eva A. A.
Guo, Xiao
Hillenbrand, Rainer
Liu, Mengkun
Brünig, Michael
Cernescu, Adrian
Govyadinov, Alexander A.
Gabbrielli, Tecla
Pelini, Jacopo
La Penna, Irene
Sorgi, Alessia
De Natale, Paolo
Mazzotti, Davide
Galli, Iacopo
Consolino, Luigi
Cappelli, Francesco
Borri, Simone
author_facet Silvestri, Carlo
Rakić, Aleksandar D.
Indjin, Dragan
Khalatpour, Ali
Jirauschek, Christian
Demic, Aleksandar
Ikonic, Zoran
Dean, Paul
Vuković, Nikola
Radovanović, Jelena
Li, Lianhe
Linfield, Edmund
Jaidl, Michael
Unterrainer, Karl
Scalari, Giacomo
Faist, Jérôme
Columbo, Lorenzo Luigi
Brambilla, Massimo
Piccardo, Marco
Dhillon, Sukhdeep
Roy, Mithun
Burghoff, David
Bertling, Karl
Torniainen, Jari
Qi, Xiaoqiong
Taimre, Thomas
Spitz, Olivier
Grillot, Frédéric
Giglio, Marilena
Sampaolo, Angelo
Patimisco, Pietro
Spagnolo, Vincenzo
Pogna, Eva A. A.
Guo, Xiao
Hillenbrand, Rainer
Liu, Mengkun
Brünig, Michael
Cernescu, Adrian
Govyadinov, Alexander A.
Gabbrielli, Tecla
Pelini, Jacopo
La Penna, Irene
Sorgi, Alessia
De Natale, Paolo
Mazzotti, Davide
Galli, Iacopo
Consolino, Luigi
Cappelli, Francesco
Borri, Simone
contents Quantum cascade lasers (QCLs) are unipolar semiconductor lasers first demonstrated in 1994. Since then, they have played a central role in advancing mid-infrared and terahertz photonics, becoming among the most reliable light sources in these regions of the electromagnetic spectrum. Their importance is further reinforced by their ability to generate self-starting optical frequency combs, whose investigation is motivated both by fundamental physics and by a wide range of applications, including molecular spectroscopy and free-space optical communications. This Roadmap provides a unified overview of current advances and emerging directions in QCL research. The chapters are organized into three main sections: device design and technology; frequency combs and pulse formation; and applications of QCLs. Each chapter reviews the relevant background, summarizes the current state of the art, and identifies key challenges and future directions within its specific research area.
format Preprint
id arxiv_https___arxiv_org_abs_2602_17042
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle Quantum cascade laser roadmap
Silvestri, Carlo
Rakić, Aleksandar D.
Indjin, Dragan
Khalatpour, Ali
Jirauschek, Christian
Demic, Aleksandar
Ikonic, Zoran
Dean, Paul
Vuković, Nikola
Radovanović, Jelena
Li, Lianhe
Linfield, Edmund
Jaidl, Michael
Unterrainer, Karl
Scalari, Giacomo
Faist, Jérôme
Columbo, Lorenzo Luigi
Brambilla, Massimo
Piccardo, Marco
Dhillon, Sukhdeep
Roy, Mithun
Burghoff, David
Bertling, Karl
Torniainen, Jari
Qi, Xiaoqiong
Taimre, Thomas
Spitz, Olivier
Grillot, Frédéric
Giglio, Marilena
Sampaolo, Angelo
Patimisco, Pietro
Spagnolo, Vincenzo
Pogna, Eva A. A.
Guo, Xiao
Hillenbrand, Rainer
Liu, Mengkun
Brünig, Michael
Cernescu, Adrian
Govyadinov, Alexander A.
Gabbrielli, Tecla
Pelini, Jacopo
La Penna, Irene
Sorgi, Alessia
De Natale, Paolo
Mazzotti, Davide
Galli, Iacopo
Consolino, Luigi
Cappelli, Francesco
Borri, Simone
Optics
Quantum cascade lasers (QCLs) are unipolar semiconductor lasers first demonstrated in 1994. Since then, they have played a central role in advancing mid-infrared and terahertz photonics, becoming among the most reliable light sources in these regions of the electromagnetic spectrum. Their importance is further reinforced by their ability to generate self-starting optical frequency combs, whose investigation is motivated both by fundamental physics and by a wide range of applications, including molecular spectroscopy and free-space optical communications. This Roadmap provides a unified overview of current advances and emerging directions in QCL research. The chapters are organized into three main sections: device design and technology; frequency combs and pulse formation; and applications of QCLs. Each chapter reviews the relevant background, summarizes the current state of the art, and identifies key challenges and future directions within its specific research area.
title Quantum cascade laser roadmap
topic Optics
url https://arxiv.org/abs/2602.17042