A scheme for the generation of modulated blue laser radiation is demonstrated. The 923 nm radiation of a high-power diode-laser master-oscillator power-amplifier system is wavelength modulated within a range of 0.2 nm by modulating the injection current of the distributed feedback (DFB) diode oscillator. Single-pass frequency doubling of the generated radiation in periodically poled potassium titanyl phospate converts the wavelength modulation into an intensity modulation with a contrast ratio exceeding 700:1. The 3 dB modulation bandwidth of 35 kHz is limited by the speed of the wavelength tuning of the DFB oscillator.
Published in:
Applied Physics Letters
(Volume:86
,
Issue:
15
)
Date of Publication:
Apr 2005
- Page(s):
-
151101
-
151101-3
- ISSN :
-
0003-6951
- Digital Object Identifier :
-
10.1063/1.1899234
- Product Type:
-
Journals & Magazines
- Date of Current Version :
-
18 June 2009
- Issue Date :
-
Apr 2005