Detection of single human hairs with a terahertz nonlinear quantum cascade laser.
Appl Opt
; 59(29): 9169-9173, 2020 Oct 10.
Article
en En
| MEDLINE
| ID: mdl-33104628
ABSTRACT
We report the demonstration of imaging of a single human hair with a terahertz quantum cascade laser (THz-QCL) source based on intracavity difference-frequency generation. A single human hair whose diameter was about 100 µm was detected using the THz-QCL source operating at 240 K, of which the THz beam had a linear polarization. The results show that the THz image of a human hair clearly depends on the polarization direction of the THz beam. The THz QCL sources that are capable of room temperature operation will be useful for detection of small foreign objects like human hairs.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Teoría Cuántica
/
Láseres de Semiconductores
/
Espectroscopía de Terahertz
/
Radiación Terahertz
/
Cabello
Tipo de estudio:
Diagnostic_studies
Límite:
Humans
Idioma:
En
Revista:
Appl Opt
Año:
2020
Tipo del documento:
Article