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Tunable Multimode Lasing in a Fiber Ring
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DOI：10.1103/PhysRevApplied.19.L051001.png)
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Abstract
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We experimentally study a fiber loop laser with an integrated erbium-doped fiber (EDF). The output optical spectrum is measured as a function of the EDF temperature. We find that below a critical temper-ature of about 10 K the measured optical spectrum exhibits a sequence of narrow and unequally spaced peaks. Externally injected light and filtering are employed for tuning the peaks' wavelengths. Operation of the device as an optical memory having a storage time of about 20 ms is demonstrated. The multi -mode lasing tunability can be exploited for novel applications in the fields of sensing, communication, and quantum data storage.
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