Optical Carrier-Sideband Phase Control by Injection Locking
Date Issued
2006
Date
2006
Author(s)
Chen, Yen-Ting
DOI
en-US
Abstract
The injection locking phenomenon appears when a source laser (or a “master” laser) with a appropriated injection power is injected into a free oscillating laser (slave laser), and detuned from the frequency of it. Depending on the frequency detuning and the injection power, the slave laser can be either stably, unstably locked, or become chaotic. The phase difference between master and slave laser is also related to the detuning, injection power, and locking bandwidth.
On the other hand, accurate optical phase control is always a challenge. This thesis proposes an approach, using the technique of optical injection locking, regarding to the carrier and sideband of a 823nm semiconductor laser, to control the phase between them。 We first prove by experiment that a beat note injecting radiation can also induce a beat note from the slave laser with the same frequency. Then we use this method to extract the phase signal by mixing the master and slave beat signal. By observing the phase signal we can change the frequency of the master or slave laser to control the phase difference between the carrier and sideband of the injection locked radiation.
On the other hand, accurate optical phase control is always a challenge. This thesis proposes an approach, using the technique of optical injection locking, regarding to the carrier and sideband of a 823nm semiconductor laser, to control the phase between them。 We first prove by experiment that a beat note injecting radiation can also induce a beat note from the slave laser with the same frequency. Then we use this method to extract the phase signal by mixing the master and slave beat signal. By observing the phase signal we can change the frequency of the master or slave laser to control the phase difference between the carrier and sideband of the injection locked radiation.
Subjects
半導體雷射
注入鎖頻
注入鎖定
光相位
光相位控制
injection locking
optical phase control
carrier sideband phase control
semiconductor laser
Type
thesis
File(s)![Thumbnail Image]()
Loading...
Name
ntu-95-R93921104-1.pdf
Size
23.31 KB
Format
Adobe PDF
Checksum
(MD5):d816c67c06e38b6dff75e084b0657c6b