✦ LIBER ✦
Efficient harmonic generation of second, third, and fourth orders from Fourier-transform-limited CO2 laser beam at 10.6 μm in GaSe crystals
✍ Scribed by Yi Jiang; Yujie J. Ding
- Publisher
- Elsevier Science
- Year
- 2009
- Tongue
- English
- Weight
- 266 KB
- Volume
- 282
- Category
- Article
- ISSN
- 0030-4018
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✦ Synopsis
Second, 3rd, and 4th order harmonics from a Fourier-transform-limited nanosecond CO 2 laser beam at 10.6 lm were efficiently generated within one or two GaSe crystals. The peak output powers were determined to be 443, 23, and 2 W, respectively, corresponding to conversion efficiencies of 3.0%, 0.13% and 0.0093%, which were significantly improved, compared with all the previous results. The linewidths of the harmonic beams were estimated to be 80, 104, and 116 MHz, respectively.