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Highly efficient infrared optical nonlinearity of a wide-bandgap chalcogenide Li2CdGeS4
- Jang, J. I.;
- Clark, D. J.;
- Brant, J. A.;
- Aitken, J. A.;
- Kim, Y. S.
WEB OF SCIENCE
21SCOPUS
24초록
A quaternary chalcogenide Li2CdGeS4 is an excellent candidate for a nonlinear optical (NLO) material exhibiting wide transparency spanning from its fundamental band edge (3.15 eV) to the terahertz regime (23.5 m). Strong optical nonlinearity of Li2CdGeS4 has been investigated over a wide spectral range (lambda = 1.064-3.3 m) based on second- and third-harmonic generation. The compound has a high damage threshold at lambda = 1.064 m because of saturable three-photon absorption, and is phase-matchable for lambda > 1.5 m with chi(2) 2 similar or equal to 50 pm/V. It also exhibits strong third-order nonlinearity of chi((3)) similar or equal to 10(5) pm(2)/V-2. Li2CdGeS4 is promising for high-power NLO applications in the broad infrared spectrum. (C) 2014 Optical Society of America
키워드
- 제목
- Highly efficient infrared optical nonlinearity of a wide-bandgap chalcogenide Li2CdGeS4
- 저자
- Jang, J. I.; Clark, D. J.; Brant, J. A.; Aitken, J. A.; Kim, Y. S.
- 발행일
- 2014-08-01
- 유형
- Article
- 저널명
- Optics Letters
- 권
- 39
- 호
- 15
- 페이지
- 4579 ~ 4582