Figure 1 | Scientific Reports

Figure 1

From: Spectral dynamics of picosecond gain-switched pulses from nitride-based vertical-cavity surface-emitting lasers

Figure 1

Schematic diagram of experimental setup and sample structure.

Top panel shows time-integrated lasing spectra of gain-switched InGaN vertical-cavity surface-emitting laser (VCSEL) for different pump powers. Inset shows enlarged lasing spectra. Note the spectral broadening toward short-wavelength side as the pump power is increased. ND filter: neutral density filters; BS: beam splitter; M: mirror; Osc: oscillator; Reg: regenerative amplifier; BBO: β -BaB2O4 (BBO) crystal.

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