Abstract: Structured light, in particular light possessing orbital angular momentum (OAM), has been actively studied in recent decades. Helical Bragg grating (HBG) is a reflecting optical element, ...

Santana High shooter’s life sentence erased. District attorney files immediate appeal. The move sends Charles "Andy" Williams' case back to Juvenile Court. He was 15 when he killed two and wounded 13.

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Abstract: This article proposes a three-stage dead-time adjustment scheme for the leading-leg and lagging-leg switches of phase-shift full-bridge converter (PSFBC) according to the load conditions to ...

LIGHTCONVERSION的飞秒激光器系列包括PHAROS、CARBIDE和FLINT振荡器，广泛应用于科研与工业领域。PHAROS系列以其可定制的激光输出参数、高可靠性及工艺性著称，新型号具有100 fs的脉宽和4mJ的单脉冲能量。CARBIDE系列则提供紧凑的工业设计，风冷和水冷模式兼具，最高 ...

A guide to San Diego area community events for Hanukkah–the Festival of Lights By Linda Mcintosh December 14, 2025 at 7:17 a.m.

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