The **KOHERAS BOOSTIK laser system** is a high‑performance integrated solution based on an upgraded architecture of the **AdjustiK benchtop laser**. By introducing an independent high‑power fiber amplifier module, it significantly increases output power and system flexibility. While preserving the excellent original characteristics of AdjustiK, the system further optimizes performance, providing **ultra‑narrow linewidth (typically <1 kHz)** and **highly stable high‑power output (continuously adjustable from 2 W to 15 W)**, making it suitable for demanding applications such as precision spectroscopy, coherent detection and nonlinear optics where stringent requirements on laser linewidth and power stability are critical. Furthermore, **KOHERAS BOOSTIK** offers modular configuration options; users can choose either a standard benchtop structure or a **19″ rack‑mount installation** according to their needs. The rack‑mount version is equipped with an **electronic control system** for easy integration into large experimental platforms or industrial equipment, while also optimizing thermal management and long‑term operational stability to ensure reliable high‑performance output in both research and industrial environments.