Numerical studies of resonators with on-axis holes in mirrors for FEL application

Keselbrener, M.; Ruschin, S.; Lissak, Boaz; Gover, A.

doi:10.1016/0168-9002(91)90975-v

Cited by 12 publications

(2 citation statements)

References 3 publications

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“…Since the TEM 1,0,p /TEM 0,1,p modes has a node at the center axis of the cavity, the loss of the quality factor due to the the center hole at the mirror surfaces is minimized. It agrees well with the previous calculations, in which higher quality factors are predicted for the TEM 0,1 mode than that for the TEM 0,0 mode [26][27][28]. It is also noted that the quality factors of the doublet in the TEM 2,0,p /TEM 0,2,p /TEM 1,1,p modes are also a few times larger than that of the TEM 0,0,p mode.…”

Section: Quality Factors: Mode Dependencesupporting

confidence: 91%

“…In general, the loaded quality factor Q L is affected by various power losses such as the diffraction by a finite mirror size, surface roughness, surface resistance, and the existence of the center holes. Among them, the surface resistance is a dominant factor that determines the total quality factor at room temperature [19,[25][26][27][28]. The total loaded quality factor of our cavity at room temperature is expected to be on the order of 10 4 to 10 5 .…”

Section: Quality Factormentioning

confidence: 99%

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A superconducting Fabry–Perot cavity for trapping cold molecules

Vashishta

Farahbod

et al. 2020

J. Phys. B: At. Mol. Opt. Phys.

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A superconducting Fabry–Perot microwave cavity for a molecular trap was designed, constructed and characterized. The cavity was designed to create intense microwave fields that are sufficient to trap cold polar molecules by the AC Stark force. By coating the mirror surfaces with a superconducting material, an unloaded quality factor of up to 1.1 × 106 at 24.087 GHz was achieved at a temperature of 2.24 K. The field strength of 1.06 MV m−1 obtained for a TEM02 transverse mode with an input power of 10 W is sufficiently intense to trap ammonia molecules at a temperature of 85 mK, which is achievable by a conventional Stark molecular decelerator. We have also implemented an ion optics assembly for sensitive detection of molecules inside the microwave cavity by resonance enhanced multi-photon ionization.

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Section: Quality Factors: Mode Dependencesupporting

confidence: 91%