<i>λ</i> ∼ 4.7 μm Quantum Cascade Distributed-Feedback Lasers for Free-Space Communications
Quantum cascade lasers (QCLs) have emerged as promising candidate sources for free-space communications. High optical power densities, short photon lifetimes, and low internal capacitance are important factors influencing the transmission bandwidth. We report the design and fabrication of 4.7 <in...
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MDPI AG
2025-01-01
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| Series: | Photonics |
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| Online Access: | https://www.mdpi.com/2304-6732/12/1/51 |
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| author | Morgan Turville-Heitz Robert Marsland Jae Ha Ryu Steven A. Jacobs Jeremy D. Kirch Tom Earles Steven Ruder Kevin Oresick Benjamin Knipfer Dan Botez Luke J. Mawst |
| author_facet | Morgan Turville-Heitz Robert Marsland Jae Ha Ryu Steven A. Jacobs Jeremy D. Kirch Tom Earles Steven Ruder Kevin Oresick Benjamin Knipfer Dan Botez Luke J. Mawst |
| author_sort | Morgan Turville-Heitz |
| collection | DOAJ |
| description | Quantum cascade lasers (QCLs) have emerged as promising candidate sources for free-space communications. High optical power densities, short photon lifetimes, and low internal capacitance are important factors influencing the transmission bandwidth. We report the design and fabrication of 4.7 <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mi mathvariant="sans-serif">μ</mi></semantics></math></inline-formula>m emitting, 1.5 mm cavity length, single-mode distributed-feedback QCLs, with a CW front-facet output power of 165 mW and a calculated photon lifetime of 11.6 ps, resulting in an electrically limited CW modulation with a 3 dB cutoff at 850 MHz. |
| format | Article |
| id | doaj-art-0f7bbe8eff6b4a2ab43aae94e14ed7d2 |
| institution | Kabale University |
| issn | 2304-6732 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Photonics |
| spelling | doaj-art-0f7bbe8eff6b4a2ab43aae94e14ed7d22025-01-24T13:46:20ZengMDPI AGPhotonics2304-67322025-01-011215110.3390/photonics12010051<i>λ</i> ∼ 4.7 μm Quantum Cascade Distributed-Feedback Lasers for Free-Space CommunicationsMorgan Turville-Heitz0Robert Marsland1Jae Ha Ryu2Steven A. Jacobs3Jeremy D. Kirch4Tom Earles5Steven Ruder6Kevin Oresick7Benjamin Knipfer8Dan Botez9Luke J. Mawst10Department of Electrical and Computer Engineering, University of Wisconsin-Madison, Madison, WI 53706, USAIntraband, LLC, Madison, WI 53726, USADepartment of Electrical and Computer Engineering, University of Wisconsin-Madison, Madison, WI 53706, USAIntraband, LLC, Madison, WI 53726, USADepartment of Electrical and Computer Engineering, University of Wisconsin-Madison, Madison, WI 53706, USADRS Daylight Solutions, Madison, WI 53704, USADRS Daylight Solutions, Madison, WI 53704, USADRS Daylight Solutions, Madison, WI 53704, USADRS Daylight Solutions, Madison, WI 53704, USADepartment of Electrical and Computer Engineering, University of Wisconsin-Madison, Madison, WI 53706, USADepartment of Electrical and Computer Engineering, University of Wisconsin-Madison, Madison, WI 53706, USAQuantum cascade lasers (QCLs) have emerged as promising candidate sources for free-space communications. High optical power densities, short photon lifetimes, and low internal capacitance are important factors influencing the transmission bandwidth. We report the design and fabrication of 4.7 <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mi mathvariant="sans-serif">μ</mi></semantics></math></inline-formula>m emitting, 1.5 mm cavity length, single-mode distributed-feedback QCLs, with a CW front-facet output power of 165 mW and a calculated photon lifetime of 11.6 ps, resulting in an electrically limited CW modulation with a 3 dB cutoff at 850 MHz.https://www.mdpi.com/2304-6732/12/1/51quantum cascade lasersdistributed feedback lasersoptical communicationmid-infrared lasershigh-speed modulation |
| spellingShingle | Morgan Turville-Heitz Robert Marsland Jae Ha Ryu Steven A. Jacobs Jeremy D. Kirch Tom Earles Steven Ruder Kevin Oresick Benjamin Knipfer Dan Botez Luke J. Mawst <i>λ</i> ∼ 4.7 μm Quantum Cascade Distributed-Feedback Lasers for Free-Space Communications Photonics quantum cascade lasers distributed feedback lasers optical communication mid-infrared lasers high-speed modulation |
| title | <i>λ</i> ∼ 4.7 μm Quantum Cascade Distributed-Feedback Lasers for Free-Space Communications |
| title_full | <i>λ</i> ∼ 4.7 μm Quantum Cascade Distributed-Feedback Lasers for Free-Space Communications |
| title_fullStr | <i>λ</i> ∼ 4.7 μm Quantum Cascade Distributed-Feedback Lasers for Free-Space Communications |
| title_full_unstemmed | <i>λ</i> ∼ 4.7 μm Quantum Cascade Distributed-Feedback Lasers for Free-Space Communications |
| title_short | <i>λ</i> ∼ 4.7 μm Quantum Cascade Distributed-Feedback Lasers for Free-Space Communications |
| title_sort | i λ i ∼ 4 7 μm quantum cascade distributed feedback lasers for free space communications |
| topic | quantum cascade lasers distributed feedback lasers optical communication mid-infrared lasers high-speed modulation |
| url | https://www.mdpi.com/2304-6732/12/1/51 |
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