Infrared photoluminescence (IRPL) is a Stokes-shifted emission arising from radiative relaxation of the excited state of the principal dosimetric tap in feldspar. Recent investigations have revealed that there exist two IRPL emissions at 880 nm and 955 nm (for excitation using 830 nm laser). Since IRPL does not depend on the recombination centers, the signal can be read out non-destructively; this allows us to insert its measurement in a conventional IRSL (infrared stimulated luminescence) or post IR-IRSL single-aliquot regenerative (SAR) dose protocol.

In this study, we focus on the development of a SAR protocol using the two different IRPL emission bands (~880 nm and ~955 nm) and test their potential for sediment dating with known-age samples. Our results show that accurate equivalent doses from 100 to 300 Gy (age range 20–128 ka) can be obtained using an IRPL-based SAR protocol without a fading correction.

红外光致发光（IRPL）是斯托克斯位移的发射，是由长石中主要剂量学抽头的激发态的辐射弛豫引起的。最近的研究表明，在880 nm和955 nm处存在两种IRPL发射（使用830 nm激光激发）。由于IRPL不依赖重组中心，因此可以无损读取信号。这使我们可以将其测量值插入常规IRSL（红外激发发光）或IR-IRSL单等份再生（SAR）剂量方案中。

在这项研究中，我们专注于使用两个不同的IRPL发射带（〜880 nm和〜955 nm）开发SAR协议，并测试它们与已知年龄样品的沉积物约会的潜力。我们的结果表明，使用基于IRPL的SAR协议可以获得100至300 Gy（年龄范围20–128 ka）的准确等效剂量，而无需进行衰落校正。