Chunbo Li, Xikui Ren, Honglei Wu, Ruisheng Zheng, Junqing Zhao, Deqin Ouyang, Chenlin Du, Peiguang Yan, Shuangchen Ruan. Octave-spanning visible supercontinuum generation from an aluminum nitride single crystal pumped by a 355 nm nanosecond pulse[J]. Chinese Optics Letters, 2018, 16(4): 043201
- Chinese Optics Letters
- Vol. 16, Issue 4, 043201 (2018)
Fig. 1. Solidification process of the grinding sample.
Fig. 2. Schematic illustration of the polishing process.
Fig. 3. XRD spectrum of the as-obtained AlN crystal. Inset: photograph of the polished AlN single crystal.
Fig. 4. Raman spectrum of the polished AlN under ambient conditions.
Fig. 5. Experimental setup for the SC generation. UV laser: 355 nm laser; Mirror: flat mirror with protected aluminum; NPF: narrow-bandpass filter; L1, L2: UV-fused silica plano–convex lenses; DM: dichroic mirrors HT@330–360 nm and HR@385–450 nm; LPF: longpass filter; Spect: spectrometer.
Fig. 6. Supercontinuum evolution with different pump powers at 355 nm.
Fig. 7. Output spectrum at the maximum pump power of 9 W. Inset: the corresponding output far-field beam profile.
Fig. 8. Relationship between the output characteristics and the input pump power.
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