L-band Raman lasing in chalcogenide glass microresonator started by thermal mode pulling with auxiliary red diode laser

• Main Authors: A.V. Andrianov, E.A. Anashkina
• Format: Article
• Language: English
• Published: Elsevier 2021-05-01
• Series: Results in Physics
• Subjects: Microresonator; Whispering gallery modes; Chalcogenide glass; Raman laser
• Online Access: http://www.sciencedirect.com/science/article/pii/S2211379721003193

Chalcogenide glass microresonators (MRs) with whispering gallery modes (WGMs) having a huge third-order nonlinearity are an attractive platform for producing miniature photonic devices, such as Raman lasers in the near- and mid-IR range. However, the excitation of a proper WGM, leading to the start of a new wavelength generation, requires smart passive or active control. Here we propose and demonstrate a simple and cheap way to start a single-mode Raman laser in a chalcogenide glass MR pumped by a standard telecom CW laser at a constant wavelength using a red laser diode for the thermal control of WGMs leading to mode pulling. We attain single-mode Raman lasing at 1620 nm in As2S3 glass MR using a C-band pump laser at 1530 nm and a red laser diode at 650 nm.