维尔纽斯激光帝国：波罗的海小国如何抢占全球精密光学高地
In a repurposed Soviet-era electrical plant on the outskirts of Vilnius, three engineers in white bunny suits lean over an optical table, calibrating a green beam that pulses a trillion times per second. This is Vaivora Photonics, a firm little known outside its niche, yet one that embodies Lithuania’s audacious claim on a sliver of the global high-tech economy. The country, with barely 2.8 million people, has somehow become an indispensable supplier of ultrafast lasers—the kind that can cut a transistor gate without scorching its neighbours or capture molecular motion as a series of frozen frames.
The ecosystem traces its origins to the laser research centre at Vilnius University, a Cold‑War holdout whose scientists, after independence, spun off private enterprises rather than emigrating. Light Conversion, EKSKLA, and a dozen smaller outfits now export picosecond and femtosecond systems to over 100 countries, earning Lithuania what industry insiders estimate to be roughly half of the global market for scientific-grade, amplified ultrafast sources. The success hinges not on scale but on a remarkably dense concentration of tacit knowledge: physicists who understand nonlinear crystals, proprietary chirped‑pulse amplification techniques, and the art of coaxing a cavity to produce a stable, sub‑picosecond train.
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