Fig. 5: Demonstration of the chip-scale semiconductor/solid-state vertically integrated laser.
From: Chip-scale high-peak-power semiconductor/solid-state vertically integrated laser
a Photograph of the laser chip. b I–L characteristics. c Pulse energy stability (2 h) of the chip-scale integrated laser (inset: temporal waveform). d Single-pulse waveform. The vertical axis was calculated from the obtained pulse energy (30.4 μJ) and the pulse waveform. e Optical spectrum. f M2 (beam quality) measurements (inset: beam profile at the beam waist). g Output power stability for 24 hours. The data presented in c–g were measured at an injection current of 330 mA.
