<div class="csl-bib-body">
<div class="csl-entry">Marschick, G., Pelini Jacopo, Gabbrielli, T., Cappelli, F., Weih, R., Knötig, H., Koeth, J., Höfling, S., De Natale, P., Strasser, G., Borri, S., & Hinkov, B. (2024). Mid-infrared Ring Interband Cascade Laser: Operation at the Standard Quantum Limit. <i>ACS Photonics</i>, <i>11</i>(2), 395–403. https://doi.org/10.1021/acsphotonics.3c01159</div>
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dc.identifier.issn
2330-4022
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dc.identifier.uri
http://hdl.handle.net/20.500.12708/196844
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dc.description.abstract
Many precision applications in the mid-infrared spectral range have strong constraints based on quantum effects that are expressed in particular noise characteristics. They limit, e.g., sensitivity and resolution of mid-infrared imaging and spectroscopic systems as well as the bit-error rate in optical free-space communication. Interband cascade lasers (ICLs) are a class of mid-infrared lasers exploiting interband transitions in type-II band alignment geometry. They are currently gaining significant importance for mid-infrared applications from < 3 to > 6 μm wavelength, enabled by novel types of high-performance ICLs such as ring-cavity devices. Their noise behavior is an important feature that still needs to be thoroughly analyzed, including its potential reduction with respect to the shot-noise limit. In this work, we provide a comprehensive characterization of λ = 3.8 μm-emitting, continuous-wave ring ICLs operating at room temperature. It is based on an in-depth study of their main physical intensity noise features such as their bias-dependent intensity noise power spectral density and relative intensity noise. We obtained shot-noise-limited statistics for Fourier frequencies above 100 kHz. This is an important result for precision applications, e.g., interferometry or advanced spectroscopy, which benefit from exploiting the advantage of using such a shot-noise-limited source, enhancing the setup sensitivity. Moreover, it is an important feature for novel quantum optics schemes, including testing specific light states below the shot-noise level, such as squeezed states.
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dc.description.sponsorship
European Commission
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dc.description.sponsorship
FFG - Österr. Forschungsförderungs- gesellschaft mbH; FFG - Österr. Forschungsförderungs- gesellschaft mbH
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dc.language.iso
en
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dc.publisher
AMER CHEMICAL SOC
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dc.relation.ispartof
ACS Photonics
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dc.rights.uri
http://creativecommons.org/licenses/by/4.0/
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dc.subject
balanced detection
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dc.subject
intensity noise
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dc.subject
interband cascade laser
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dc.subject
mid-infrared
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dc.subject
optoelectronics
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dc.subject
quantum limit
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dc.subject
shot-noise
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dc.title
Mid-infrared Ring Interband Cascade Laser: Operation at the Standard Quantum Limit