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Miniature laser sources with on-demand beam features are desirable devices for a broad range of photonicapplications. Lasing based on direct-pump of miniaturized waveguiding active structures offers a low-costbut intriguing solution for compact light-emitting devices. In this work, we demonstrate a novel family ofthree dimensional (3D) photonic microstructures monolithically integrated in a Nd:YAG laser crystal wafer.They are produced by the femtosecond laser writing, capable of simultaneous light waveguiding and beammanipulation. In these guiding systems, tailoring of laser modes by both passive/active beam splitting andring-shaped transformation are achieved by an appropriate design of refractive index patterns. Integrationof graphene thin-layer as saturable absorber in the 3D laser structures allows for efficient passiveQ-switching of tailored laser radiations which may enable miniature waveguiding lasers for broaderapplications. Our results pave a way to construct complex integrated passive and active laser circuits indielectric crystals by using femtosecond laser written monolithic photonic chipsThis work was supported by National Natural Science Foundation of China (No.11274203), Specialized Research Fund for the Doctoral Program of Higher Education ofChina (No. 20130131130001), and Junta de Castillay León under project SA086A12-

Monolithic crystalline cladding microstructures for efficient light guiding and beam manipulation in passive and active regimes