Title:
PUMP PROBE MEASURING DEVICE, AND SCANNING PROBE MICROSCOPE APPARATUS USING THE DEVICE
Document Type and Number:
WIPO Patent Application WO/2008/066090
Kind Code:
A1
Abstract:
Provided is a pump probe measuring device (1) comprising an ultrashort optical
pulse laser generating unit (11) for generating a first ultrashort optical pulse
train to become a pump light and a second ultrashort optical pulse train to become
a probe light, a delay time adjusting unit (15) for adjusting the delay time of
the ultrashort optical pulse train, first and second pulse pickers (13 and 14)
for introducing the first and second ultrashort optical pulse trains, respectively,
to transmit one pulse at an arbitrary repetition frequency thereby to reduce
the effective repetition frequencies of the optical pulses, a delay time modulating
unit (10) for changing periodically the selected portions of the pulses to be
passed from the first and second pulse pickers (13 and 14), an irradiating optical
system (16) for irradiating a specimen (19) with the pump light and the probe light,
and a measurement unit (20) for detecting a probe signal from the specimen (19),
and a lock-in detecting unit (18).
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Inventors:
SHIGEKAWA HIDEMI (JP)
TAKEUCHI OSAMU (JP)
TAKEUCHI OSAMU (JP)
Application Number:
PCT/JP2007/072988
Publication Date:
June 05, 2008
Filing Date:
November 28, 2007
Export Citation:
Assignee:
JAPAN SCIENCE & TECH AGENCY (JP)
SHIGEKAWA HIDEMI (JP)
TAKEUCHI OSAMU (JP)
SHIGEKAWA HIDEMI (JP)
TAKEUCHI OSAMU (JP)
International Classes:
G01N21/01; G01B7/00; G01N21/27; G01N21/39; G01Q60/10
Domestic Patent References:
| WO2003046519A1 | 2003-06-05 |
Foreign References:
| JPH10233544A | 1998-09-02 | |||
| JP2000515624A | 2000-11-21 |
Other References:
OGAWA K.: "Femtosecond spectrum sampling technology and its applications to nonlinear spectroscopy of semiconductors", TECHNICAL REPORT OF IEICE LQE, vol. 98, no. 342, 21 October 1998 (1998-10-21), pages 59 - 64, XP003022902
BARTELS A. ET AL.: "Femtosecond time-resolved optical pump-probe spectroscopy at kilohertz-scan-rates over nanosecond-time-delays without mechanical delay line", APPLIED PHYSICS LETTERS, vol. 88, no. 4, 25 January 2006 (2006-01-25), pages 041117-1 - 041117-3, XP012082496
See also references of EP 2090880A4
A. BARTELS, APPL. PHYS. LETT., vol. 88, 2006, pages 041117
BARTELS A. ET AL.: "Femtosecond time-resolved optical pump-probe spectroscopy at kilohertz-scan-rates over nanosecond-time-delays without mechanical delay line", APPLIED PHYSICS LETTERS, vol. 88, no. 4, 25 January 2006 (2006-01-25), pages 041117-1 - 041117-3, XP012082496
See also references of EP 2090880A4
A. BARTELS, APPL. PHYS. LETT., vol. 88, 2006, pages 041117
Attorney, Agent or Firm:
HIRAYAMA, Kazuyuki (Shinjukugyoen Bldg. 2-3-10, Shinjuku,Shinjuku-k, Tokyo 22, JP)
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