Self-curable solid-state elastic dye lasers capable of mechanical stress probing.
Herein, a highly sensitive stress probe is reported based on pyrromethene 597 (PM597) doped elastic polydimethylsiloxane films. By sandwiching the dye doped elastic film with two plano dichromatic mirrors, a solid-sate microcavity laser with low laser threshold (~0.2 μJ) is presented as a straightforward probing method for mechanical stress, which is monitored by the laser output spectra, demonstrating a resolution limit higher than 0.01 MPa. The photostability of PM597 doped into the microcavity laser is higher than 7222 GJ/mol, which is among the highest record ever reported to our knowledge and a fast self-recovery on the laser output in less than 1 h, attributed to diffusion of dye molecules is observed, indicating a practical durability for such stress probes.
State Key Laboratory of Silicon Materials, Cyrus Tang Center for Sensor Materials and Applications, Department of Materials Science & Engineering, Zhejiang University, Hangzhou, China.
Yu
Y
Yang
Zhifu
Z
Liao
Yuan
Y
Zhou
Yuanjing
Y
Cui
Guodong
G
Qian