Title :
Measurement of the penetration depth of superconducting thin films by optoelectronic sampling techniques
Author :
Shinho Cho ; Erlig, H. ; Shamino Wang ; Fetterman, H.R.
Author_Institution :
Optoelectron. Lab., California Univ., Los Angeles, CA, USA
fDate :
6/1/1997 12:00:00 AM
Abstract :
The magnetic penetration depth of YBa/sub 2/Cu/sub 3/O/sub 7-/spl delta// (YBCO) thin films has been determined as a function of temperature by using picosecond optoelectronic sampling techniques. Electrical pulses of 8 ps full width at half maximum were generated on photoconductive switches by a mode-locked Nd:YAG pumped dye laser and propagated on superconducting delay lines which were 250 mm in length. The measured behavior at low temperature (T\n\n\t\t
Keywords :
barium compounds; electro-optical effects; high-speed optical techniques; high-temperature superconductors; penetration depth (superconductivity); superconducting thin films; yttrium compounds; 250 mm; 8 ps; YBa/sub 2/Cu/sub 3/O/sub 7-/spl delta//; YBa/sub 2/Cu/sub 3/O/sub 7/; electrical pulses; mode-locked Nd:YAG pumped dye laser; optoelectronic sampling; pairing mechanism; penetration depth; photoconductive switches; picosecond optoelectronic sampling; superconducting delay lines; superconducting thin films; temperature dependence; Magnetic films; Optical pulse generation; Photoconductivity; Sampling methods; Space vector pulse width modulation; Superconducting magnets; Superconducting thin films; Switches; Temperature; Yttrium barium copper oxide;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
