Lasing Characteristics of CH3NH3PbCl3 Single-Crystal Microcavities under Multiphoton Excitation

Photoluminescence of CH3NH3PbCl3 single crystals under multiphoton excitation is studied. The emission intensity and wavelength, which are related to the phase of the single crystals, are found to be dependent on the operating temperature and pressure. High optical gain (> 110 cm(-1) @ approximate to 395 nm) and high absorption coefficient (approximate to 9 x 10(-10) cm(9) GW(-5) @ 2400 nm) can also be obtained from the single crystals. With suitable design of the resonant optical amplification, lasing emission at approximate to 395 nm is demonstrated from the singlecrystal microcavities under 2400 nm excitation. Hence, it is verified that CH3NH3PbCl3 single crystals can offer new opportunities for novel nonlinear photonics applications.