Design of praseodymium-doped chalcogenide micro-disk emitting at 47 µm

Abstract

A compact amplifier based on chalcogenide Pr³⁺-doped micro-disk coupled to two ridge waveguides is designed and refined by means of a home-made computer code. The gain G ≈ 7.9 dB is simulated for a Pr³⁺ concentration of 10 000 ppm, input signal power of -30 dBm at the wavelength 4.7 µm and input pump power of 50 mW at the wavelength 1.55 µm. In the laser behavior, i.e. without input signal, the maximum slope efficiency S = 8.1 × 10^-4 is obtained for an input pump power of 2 mW. This value is about six times higher than that simulated for an optimized erbium-doped micro-disk.

Rare‐earth‐incorporated low‐dimensional chalcogenides: Dry‐method syntheses and applications

“…Amorphous glass of chalcogenide thin films has been widely applied as optical storage media or waveguides. The most commonly used RE dopants for the application are Er and Pr . Pr 3+ ‐doped selenide thin films were fabricated by sputtering, and the device of ridge waveguides were fabricated by photolithography and dry etching method .…”

“…Several PL peaks of Er 3+ ions within the range of the visible to the middle infrared spectral region were clearly shown, and Er 3+ ‐doped chalcogenide waveguide was demonstrated to be excited at 2.76 μm. For the optical storage, the amplifier based on the Pr 3+ ‐doped chalcogenide microdisk was fabricated . In the laser test, the slope efficiency was achieved with a maximum of S = 8.1 × 10 −4 with an input pumping power of 2 mW.…”

Compound Glass Microsphere Resonator Devices

“…Heavy metal oxide glasses have better physical-chemical characteristics and preparation processes than chalcogenide glasses, while chalcogenide glasses have lower phonon energy and probability of multiple phonon relaxation compared with oxide glasses; chalcogenide glasses are also very suitable as host materials for rare earth doping. In particular, chalcogenide glasses have a wide infrared transmission window, and have received much attention as a material for MIR emission [ 18 , 19 , 20 , 21 , 22 ].…”

Compound Glass Microsphere Resonator Devices

“…In particular, chalcogenide glasses have a wide infrared transmission window, and have received much attention as a material for MIR emission [18][19][20][21][22].…”