Narrow-linewidth mid-infrared coherent sources based on fiber-amplified Er:ZBLAN microspherical lasers

Behzadi, Behsan; Jain, R. K.; Hossein‐Zadeh, Mani

doi:10.1364/cleo_si.2016.sth1o.5

Cited by 2 publications

(1 citation statement)

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“…4(b)), near threshold it should be 20 times larger (⋍1 nm, since Δν laser ∝1/P out ). Due to the limited sensitivity of the OSA, in order to measure the linewidth of the laser near threshold we used a home-made Er-Pr:ZBLAN fiber amplifier (with 30 dB small signal gain [22]). Fig.…”

Section: C2 Single Mode Operationmentioning

confidence: 99%

Spectral and Modal Properties of a Mid-IR Spherical Microlaser

Behzadi

Jain

Hossein‐Zadeh

2017

IEEE J. Quantum Electron.

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Whispering gallery mode (WGM) lasers are well-known for their small sizes, low thresholds and narrow linewidths, and have been the subject of research and development for more than two decades. However most of the initial reports and studies have focused on near-IR and visible WGM microlasers. Recent advances in the synthesis, doping and processing of high quality mid-IR transparent glasses have provided the means to extend the wavelengths of these microlasers to the mid-IR range. In this paper, we present a detailed characterization of a compact and low-cost mid-IR spherical WGM microlaser based on heavily doped Er:ZBLAN glass operating near 2.7 µm with an estimated linewidth less than 1 MHz. We describe experimental results on observed single-mode and multimode spectra, thermal tuning, and polarization characteristics of such microlasers. Using a simple analysis of spherical microresonator modes and including considerations of pump and laser mode overlap we provide guidelines for optimized microlaser design.

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Section: C2 Single Mode Operationmentioning

confidence: 99%