https://calbase.org/en/Recent content on Everything is based on scienceHugoenMon, 28 Sep 2026 00:00:00 +0800https://calbase.org/en/posts/high-power-fiber-laser-mopa/Mon, 28 Sep 2026 00:00:00 +0800https://calbase.org/en/posts/high-power-fiber-laser-mopa/How high-power lasers escaped the thermal-lensing limits of rod lasers: the MOPA (Master Oscillator Power Amplifier) architecture, multi-stage Yb-doped fiber amplification, pump combining, beam quality, and a concrete JPT MOPA optical-path example.https://calbase.org/en/about/Mon, 01 Jan 0001 00:00:00 +0000https://calbase.org/en/about/<p>This site publishes technical articles and assessments built on primary sources.</p> <p>Our principles:</p> <ul> <li>We cite only primary sources such as original papers, patents, datasheets, financial reports and MOPS filings, and do not repeat secondhand reports.</li> <li>Factual content in each article is marked &ldquo;Verified&rdquo; only after manual checking.</li> <li>When an error is found, the revision and correction are noted at the end of the article; the original is never edited silently.</li> <li>Predictions made in articles are logged on the <a href="https://calbase.org/en/predictions/">prediction tracker</a> page and followed up as results come in.</li> </ul>