Frequency stabilization of an external-cavity diode laser by offset frequency looking to a stabilized He-Ne laser

被引:1
|
作者
Sternkopf, Christian [1 ]
Goellner, Stefan [2 ]
Manske, Eberhard [1 ]
机构
[1] Tech Univ Ilmenau, Inst Proc Measurement & Sensor Technol, Fac Mech Engn, D-98684 Ilmenau, Germany
[2] EPC Technol GmbH, Ilmenau, Germany
关键词
Diode laser; frequency stabilization; external cavity diode laser; optical phase locked loop; stabilized He-Ne laser; PLL; PHASE-LOCKED LOOP; SEMICONDUCTOR-LASERS; GRATING FEEDBACK; LOCKING; IODINE; SYSTEM; SPECTROMETER; LINEWIDTH;
D O I
10.1117/12.2051521
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
We present an external cavity diode laser which is frequency coupled to a stabilized He-Ne Laser with optical phase locked loop technology. For long term frequency stability the diode laser is locked with a fixed frequency offset to a stabilized He-Ne Laser at 633nm. A commercial PLL chip and the piezo-drive of the diode laser are used for precise frequency control. With this simple technique we develop a diode laser source which reach the frequency stability of a stabilized He-Ne Laser and still provide an optical output power of 5 mW or more. This high optical output power enables applications like multi axis homodyne interferometry with just one laser source.
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页数:10
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