Patent 7620079 was granted and assigned to Shimadzu Corp. on November, 2009 by the United States Patent and Trademark Office.
A compact apparatus is provided for stably converting a wavelength of a laser diode with the use of an optical fiber and a wavelength selective device. Employing a bulk type element as a wavelength selective device makes the action of controlling the temperature of the device easy, and can stabilize the wavelength emitted from the laser diode.