A theoretical model of a tandem radiation-balanced laser is developed and applied to explore the feasibility of radiation-balanced operation. The external cavity tandem laser is composed of an optically pumped multiple quantum well InGaAs gain section that is monolithically integrated with a Yb:YLF cooling section. It is shown that performance depends critically on a number of parameters, the choice of the effective bandgap in the semiconductor being the most important one. It is established that radiation-balanced operation with efficiencies exceeding 10% can be attained provided that the active region contains a large number of quantum wells ($N \gt {10}$) and that an efficient multipass pump cavity can be implemented.

中文翻译：

---

辐射平衡串联半导体/ Yb$ ^ {3 +} $：YLF激光器：可行性研究

建立了串联辐射平衡激光器的理论模型，并将其应用于探讨辐射平衡操作的可行性。外腔串联激光器由光泵浦多量子阱InGaAs增益部分组成，该部分与Yb：YLF冷却部分整体集成。结果表明，性能主要取决于许多参数，其中最重要的选择是半导体中的有效带隙。可以确定的是，只要有源区包含大量的量子阱（$ N \ gt {10} $），并且可以实现有效的多程泵浦腔，就可以实现效率超过10％的辐射平衡操作。