AI Article Synopsis
- A new mixed crystal, Yb:Ca(Gd,Y)AlO, has been developed and tested for its growth and laser capabilities, showing promising results for both continuous-wave and mode-locked operations.
- The crystal demonstrated a maximum continuous-wave output power of 347 mW with a high slope efficiency of 48.9%, and its emission wavelength can be tuned over a wide range of 90 nm.
- In mode-locked operation, the crystal produced soliton pulses as short as 35 femtoseconds at a wavelength of 1059.8 nm, achieving an average output power of 51 mW and the potential for higher power with slightly longer pulse durations.
Article Abstract
We present the growth, spectroscopy, continuous-wave (CW) and passively mode-locked (ML) operation of a novel "mixed" tetragonal calcium rare-earth aluminate crystal, Yb:Ca(Gd,Y)AlO. The absorption, stimulated-emission, and gain cross-sections are derived for π and σ polarizations. The laser performance of a c-cut Yb:Ca(Gd,Y)AlO crystal is studied using a spatially single-mode, 976-nm fiber-coupled laser diode as a pump source. A maximum output power of 347 mW is obtained in the CW regime with a slope efficiency of 48.9%. The emission wavelength is continuously tunable across 90 nm (1010 - 1100 nm) using a quartz-based Lyot filter. With a commercial SEmiconductor Saturable Absorber Mirror to initiate and maintain ML operation, soliton pulses as short as 35 fs are generated at 1059.8 nm with an average output power of 51 mW at ∼65.95 MHz. The average output power can be scaled to 105 mW for slightly longer pulses of 42 fs at 1063.5 nm.
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| http://dx.doi.org/10.1364/OE.514436 | DOI Listing |
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