Transform-limited, achromatic injection-seeded terahertzwave parametric generator
A review to our effort on developing the transformlimited, frequency-agile terahertz-wave parametric generator (TPG) is presented. A frequency-agile THzwave generation is realized by introducing the injection-seeding method and the optical design for the stationary dispersion-compensation. The purity of the THz-wave frequency was dramatically improved to Δv/v<10-4. Simultaneously, the THz-wave output was several hundred times higher than that of a conventional TPG. In addition, a wide frequency tuning with fast tuning speed were realized. The THz-wave frequency can be set randomly or scanned continuously over a frequency range from 0.6 THz to 2.4 THz with narrow linewidth of sub 100 MHz. Furthermore, a tabletop, highperformance THz-wave gas spectrometer based on this achromatic injection-seeded TPG was developed. To demonstrate the potential of this system, we performed the measurement of the absorption line due to rotational transitions of the water molecules and determined their pressure-broadening coefficient.
R Guo H Minamide H Ito
RIKEN Advanced Science Institute, 519-1399, Aramaki Aoba, Aoba-ku, Sendai 9800845, Japan.
国际会议
3rd International Photonics & OptoElectronics Meetings(第三届国际光子与光电子学会议 POEM 2010)
武汉
英文
1-12
2010-11-03（万方平台首次上网日期，不代表论文的发表时间）