https://hackerpaper.kaipfister.de/p/2509.08092/Collected HN comments and submissions linking this paper.enMon, 02 Nov 2026 11:16:22 GMThttps://news.ycombinator.com/item?id=47820907urn:hackerpapers:mention:2509.08092:47820907Sun, 19 Apr 2026 00:56:06 GMT<p>The actual paper: https://arxiv.org/abs/2509.08092</p><p><a href="https://hackerpaper.kaipfister.de/p/2509.08092/">Paper and discussion history</a>. A mention is not an endorsement.</p>physics.opticshttps://news.ycombinator.com/item?id=47792021urn:hackerpapers:mention:2509.08092:47792021Thu, 16 Apr 2026 12:29:14 GMT<p>Free research article: https://arxiv.org/abs/2509.08092 TLDR: This is not a new kind of laser. They have developed a method of growing on semiconductor wafers a kind of crystal with non-linear optical properties (Ta2O5, tantalum oxide, like in the tantalum electrolytic capacitors). With a non-linear crystal, there are many variants of transforming the color of a laser, e.g. by generating harmonics, by non-linear mixing light from lasers of different colors or by pumping with the laser a parametric oscillator that produces a different color from that of the laser. You may be able to produce…</p><p><a href="https://hackerpaper.kaipfister.de/p/2509.08092/">Paper and discussion history</a>. A mention is not an endorsement.</p>physics.optics