Optical: systems and elements – Optical frequency converter – Optical laser acoustic delay line type
Reexamination Certificate
2011-06-14
2011-06-14
Wells, Nikita (Department: 2881)
Optical: systems and elements
Optical frequency converter
Optical laser acoustic delay line type
C359S326000, C850S006000, C850S021000, C250S310000, C250S306000, C073S800000
Reexamination Certificate
active
07961379
ABSTRACT:
A pump probe measuring device (1) includes an ultrashort optical pulse laser generator (11) for generating a first ultrashort optical pulse train, which becomes a pump light, and a second ultrashort optical pulse train, which becomes a probe light, a delay time adjusting unit (15) for adjusting a delay time between ultrashort optical pulse trains, a first pulse picker and a second pulse picker (13, 14) for accepting each of the first and the second ultrashort optical pulse trains and allowing only one pulse to be transmitted at an arbitrary repetition periodicity, thus reducing the effective repetition frequency of the optical pulses, a delay time modulation unit (10) for periodically changing a position through which pulses are transmitted by the first and the second pulse pickers (13, 14), an irradiation optical system (16) for applying pump light and probe light to a sample (19), a measuring unit (20) for detecting probe signals from a sample (19), and a lock-in amplifier (18).
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Translation of PCT/ISA/237 of PCT/JP2007/072988 with IB338 and IB373.
Shigekawa Hidemi
Takeuchi Osamu
Chen Yoshimura LLP
Japan Science and Technology Agency
Wells Nikita
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