Fig. 3
From: Raman lasing and soliton mode-locking in lithium niobate microresonators

Raman emission for the TM mode (the light polarisation is along the x-axis) at a frequency shift of 238 cm−1 at the threshold power of 340 mW.
From: Raman lasing and soliton mode-locking in lithium niobate microresonators
Raman emission for the TM mode (the light polarisation is along the x-axis) at a frequency shift of 238 cm−1 at the threshold power of 340 mW.