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6CCVD Research

Cascaded Raman lasing in a lithium tetraborate whispering gallery mode resonator

At a Glance

Section titled ā€œAt a Glanceā€
MetadataDetails
Publication Date2025-05-27
JournalPhotonics Research
AuthorsChengcai Tian, Jervee Punzalan, P. Becker, L. BohatĆ½, Keith C. Gordon
Citations1

Abstract

Section titled ā€œAbstractā€

Lithium tetraborate (LB4) is a lithium borate compound known for its exceptional linear and nonlinear optical properties, including a wide transparency range (0.16-3.5 Ī¼m) and high Raman gain. Here, a millimeter-sized LB4 whispering gallery mode (WGM) resonator with a record quality factor of 2.0Ɨ10 9 at 517 nm was fabricated using single-point diamond cutting. Pumped with about 10 mW at 517 nm, it demonstrated four cascaded stimulated Raman scattering (SRS) peaks (537-608 nm), with the first-order SRS achieving a threshold of 0.71 mW and 7.2% slope efficiency. To our knowledge, this marks the first LB4 WGM resonator Raman laser.

Tech Support

Section titled ā€œTech Supportā€

Original Source

Section titled ā€œOriginal Sourceā€

References

Section titled ā€œReferencesā€
  1. 2006 - Nonlinear Optical Crystals: A Complete Survey

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