Title:
UPWARD CONVERSION LASER PUMPED BY INFRARED-RAY LASER SOURCE OF SINGLE WAVELENGTH
Document Type and Number:
Japanese Patent JPH04229673
Kind Code:
A
Abstract:
PURPOSE: To attain laser radiation with several wavelengths by a pump source having a single wavelength by using an upper conversion processing for operating the absorption and excitation of low-energy infrared-ray pumped photon. CONSTITUTION: A laser pump source 25 is constituted of a semiconductor infrared laser operating at 797nm. A laser rod 35 includes laser mirrors 40 and 45 as dielectric coating on spherical surfaces 42 and 47, and this is constituted of YL (F4 ; Er5%) manufactured in a monolithic structure, and attached to a helium cooler 50. The laser mirror 40 has high reflectivity with upper conversion wavelengths 669nm, 551nm, and 470nm, and high transmissivity with pump wavelength 780-820nm. The laser mirror 45 has transmissivity with the 1-10% range of the upper conversion wavelength, for providing a means for outputting a laser beam from a laser 20. Therefore, a red, green, and blue upper conversion laser pumped by the infrared laser source with single wavelength can be obtained.
Inventors:
AARU EE MAKUFUAAREN
Application Number:
JP10019891A
Publication Date:
August 19, 1992
Filing Date:
May 01, 1991
Export Citation:
Assignee:
HUGHES AIRCRAFT CO
International Classes:
H01S3/0941; H01S3/094; H01S3/102; H01S3/16; (IPC1-7): H01S3/094
Domestic Patent References:
| JPH02254777A | 1990-10-15 |
Attorney, Agent or Firm:
Takehiko Suzue