Optical high-order subharmonic excitation of free cyclotron electrons.

نویسنده

  • A E Kaplan
چکیده

Homogeneous laser radiation in the visible or infrared range can excite high-order subharmonics at the cyclotron frequency of free electrons in the millimeter or microwave range. This may provide coherent links between lasers and rf or microwave frequency standards. In order to divide the frequency of a CO(2) laser (lambda approximately 10 microm) by a factor of 100 down to lambda approximately 1 mm in one step, a cw laser power as low as 10(-6) W is sufficient.

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Subharmonic resonant optical excitation of confined acoustic modes in a free-standing semiconductor membrane at GHz frequencies with a high-repetition-rate femtosecond laser.

We propose subharmonic resonant optical excitation with femtosecond lasers as a new method for the characterization of phononic and nanomechanical systems in the gigahertz to terahertz frequency range. This method is applied for the investigation of confined acoustic modes in a free-standing semiconductor membrane. By tuning the repetition rate of a femtosecond laser through a subharmonic of a ...

متن کامل

Isolas in the three-photon optical excitation of a single cyclotron electron.

We show that sufficiently strong laser beams with two frequencies differing by a cyclotron frequency of a free electron can give rise to strong cyclotron excitation with prohibited and allowed cyclotron orbits as well as to an optical Stark shift. This is due to a combination of relativistic effects and results in multiple isolated branches of excited motion (isolas). The formation of the first...

متن کامل

Generation and evolution of intense ion cyclotron turbulence by artificial plasma cloud in the magnetosphere

[1] It is shown that intense ion cyclotron turbulence can be induced in the near-Earth space by shaped release of neutral gas of materials such as lithium, cesium, etc. Release of 1 ton of neutral lithium gas in the Earth’s equatorial plane at L = 2 can introduce about 30 GJ of energy which can be used to excite waves around the lithium ion cyclotron harmonics that readily evolves into the turb...

متن کامل

The radioisotope 67Ga (T 1/2 = 78 h) in extensively used as single photon marker for detecting the presence [Persian]

The radioisotope 67Ga (T 1/2 = 78 h) in extensively used as single photon marker for detecting the presence of malignancy and the diagnosis of inflammatory diseases. The high tumor specificity of carrier-free 67Ga make it one of the most interesting radionuclides in nuclear medicine for in vivo scanning studies. 67Ga is a cyclotron produced radioisotopes and is one of the radiopharmaceuti...

متن کامل

Reference free Chi 3 dispersion measurements in planar tantalum pentoxide waveguides

We utilize analysis of third harmonic generation under femtosecond pulsed excitation as a reference free measurement method for third order nonlinear susceptibility ( ) 3 ( χ or “Chi 3”) of planar waveguides. We investigate ) 3 ( χ dispersion in planar 5 2O Ta waveguides at wavelengths either side of the telecoms window, obtaining a nonlinear coefficient of 13 10 2 − × esu, at 1550 nm. Our stud...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

عنوان ژورنال:
  • Optics letters

دوره 12 7  شماره 

صفحات  -

تاریخ انتشار 1987