Tunability of the free-spectral range by microwave injection into a mid-infrared quantum cascade laser
The free-spectral range (FSR) of quantum cascade lasers (QCLs) emitting at 4.7 µm can be tuned through direct microwave modulation. The intrinsic short carrier lifetime of inter-subband transitions, along with impedance matched electrical packaging, allows a high-speed modulation up to more than 30 ...
| Main Authors: | , , , , , , , , |
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| Format: | Journal Article |
| Language: | English |
| Published: |
2021
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| Online Access: | https://hdl.handle.net/10356/147858 |
| _version_ | 1826124153970753536 |
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| author | Rodriguez, Etienne Mottaghizadeh, Alireza Gacemi, Djamal Jeannin, Mathieu Asghari, Zahra Vasanelli, Angela Todorov, Yanko Wang, Qi Jie Sirtori, Carlo |
| author2 | School of Electrical and Electronic Engineering |
| author_facet | School of Electrical and Electronic Engineering Rodriguez, Etienne Mottaghizadeh, Alireza Gacemi, Djamal Jeannin, Mathieu Asghari, Zahra Vasanelli, Angela Todorov, Yanko Wang, Qi Jie Sirtori, Carlo |
| author_sort | Rodriguez, Etienne |
| collection | NTU |
| description | The free-spectral range (FSR) of quantum cascade lasers (QCLs) emitting at 4.7 µm can be tuned through direct microwave modulation. The intrinsic short carrier lifetime of inter-subband transitions, along with impedance matched electrical packaging, allows a high-speed modulation up to more than 30 GHz. A significant broadening and flattening of the lasing spectrum is observed under radio frequency (RF) injection with frequencies close to the round-trip cavity. An accurate analysis of the high resolution spectra of the laser shows a comb-like regime for both free-running and RF modulated QCLs, if the modulation frequency is within the locking-range of the device. One of the main advantages of collecting high-resolution mid-infrared spectra, over the plain investigation of the beatnote in the microwave region, is the access to all the longitudinal modes and thus the accurate measure of the FSR over the whole optical spectrum. The use of high-resolution spectroscopy provides an in-depth and comprehensive analysis of lasing spectra under microwave modulations. |
| first_indexed | 2024-10-01T06:16:01Z |
| format | Journal Article |
| id | ntu-10356/147858 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T06:16:01Z |
| publishDate | 2021 |
| record_format | dspace |
| spelling | ntu-10356/1478582021-04-15T08:43:56Z Tunability of the free-spectral range by microwave injection into a mid-infrared quantum cascade laser Rodriguez, Etienne Mottaghizadeh, Alireza Gacemi, Djamal Jeannin, Mathieu Asghari, Zahra Vasanelli, Angela Todorov, Yanko Wang, Qi Jie Sirtori, Carlo School of Electrical and Electronic Engineering Laboratoire Matériaux et Phénomènes Quantiques UMR7162 Université de Paris Paris 75013, France Laboratoire de Physique de l’Ecole Normale Supérieure ENS Université PSL CNRS Sorbonne Université Université de Paris Research Techno Plaza Engineering::Electrical and electronic engineering::Optics, optoelectronics, photonics Injection Locking Mid-infrared Region The free-spectral range (FSR) of quantum cascade lasers (QCLs) emitting at 4.7 µm can be tuned through direct microwave modulation. The intrinsic short carrier lifetime of inter-subband transitions, along with impedance matched electrical packaging, allows a high-speed modulation up to more than 30 GHz. A significant broadening and flattening of the lasing spectrum is observed under radio frequency (RF) injection with frequencies close to the round-trip cavity. An accurate analysis of the high resolution spectra of the laser shows a comb-like regime for both free-running and RF modulated QCLs, if the modulation frequency is within the locking-range of the device. One of the main advantages of collecting high-resolution mid-infrared spectra, over the plain investigation of the beatnote in the microwave region, is the access to all the longitudinal modes and thus the accurate measure of the FSR over the whole optical spectrum. The use of high-resolution spectroscopy provides an in-depth and comprehensive analysis of lasing spectra under microwave modulations. Ministry of Education (MOE) National Research Foundation (NRF) Published version This work was supported by the Singapore National Research Foundation, Competitive Research Program (NRF-CRP18-2017-02) and Singapore Ministry of Education Tier 2 Program (MOE2016-T2-2-159). 2021-04-15T08:43:55Z 2021-04-15T08:43:55Z 2020 Journal Article Rodriguez, E., Mottaghizadeh, A., Gacemi, D., Jeannin, M., Asghari, Z., Vasanelli, A., Todorov, Y., Wang, Q. J. & Sirtori, C. (2020). Tunability of the free-spectral range by microwave injection into a mid-infrared quantum cascade laser. Laser and Photonics Reviews, 14(5), 1900389-. https://dx.doi.org/10.1002/lpor.201900389 1863-8899 0000-0002-2397-1956 https://hdl.handle.net/10356/147858 10.1002/lpor.201900389 2-s2.0-85082932798 5 14 1900389 en NRF-CRP18-2017-02 MOE2016-T2-2-159 Laser and Photonics Reviews © 2020 The Authors. Published by WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. application/pdf |
| spellingShingle | Engineering::Electrical and electronic engineering::Optics, optoelectronics, photonics Injection Locking Mid-infrared Region Rodriguez, Etienne Mottaghizadeh, Alireza Gacemi, Djamal Jeannin, Mathieu Asghari, Zahra Vasanelli, Angela Todorov, Yanko Wang, Qi Jie Sirtori, Carlo Tunability of the free-spectral range by microwave injection into a mid-infrared quantum cascade laser |
| title | Tunability of the free-spectral range by microwave injection into a mid-infrared quantum cascade laser |
| title_full | Tunability of the free-spectral range by microwave injection into a mid-infrared quantum cascade laser |
| title_fullStr | Tunability of the free-spectral range by microwave injection into a mid-infrared quantum cascade laser |
| title_full_unstemmed | Tunability of the free-spectral range by microwave injection into a mid-infrared quantum cascade laser |
| title_short | Tunability of the free-spectral range by microwave injection into a mid-infrared quantum cascade laser |
| title_sort | tunability of the free spectral range by microwave injection into a mid infrared quantum cascade laser |
| topic | Engineering::Electrical and electronic engineering::Optics, optoelectronics, photonics Injection Locking Mid-infrared Region |
| url | https://hdl.handle.net/10356/147858 |
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