Spectroscopy method and spectroscope

Details Spectroscopy method and spectroscope Spectroscopy method and spectroscope

2006-09-06

2010-12-21

Connolly, Patrick J (Department: 2877)

Optics: measuring and testing

By light interference

Spectroscopy

C356S477000, C356S483000

Reexamination Certificate

active

07855788

ABSTRACT:
To achieve an apparatus capable of measuring a light absorption coefficient f a sample with high sensitivity. A ring down spectroscope uses a wavelength-variable femtosecond soliton pulse light source1. Pulse light is input to a loop optical fiber6through a first light waveguide4and a wavelength selective switch5. Ring down pulse light is input to a homodyne detector through the wavelength selective switch5. On the other hand, pulse light propagating in the first light waveguide4is split and input to light waveguides constituting a second light waveguide20through an optical directional coupler8and a first optical switching element12. The pulse light propagating in the second light waveguide20is input to the homodyne detector as reference light and used for synchronous detection. The plural light waveguides constituting the second light waveguide20differ in optical length in accordance with the length of the optical fiber6, and can slightly change the optical length.

REFERENCES:
patent: 6694067 (2004-02-01), O'Keefe et al.
patent: 6842548 (2005-01-01), Loock et al.
patent: 7012696 (2006-03-01), Orr
patent: 7391942 (2008-06-01), Loock et al.
patent: 7483598 (2009-01-01), Loock et al.
patent: 2003/0007715 (2003-01-01), Loock et al.
patent: 2005/0201661 (2005-09-01), Loock et al.
patent: 2007/0252995 (2007-11-01), Shaw
patent: 01-176920 (1989-07-01), None
patent: 10-332584 (1998-12-01), None
patent: 2000-338037 (2000-12-01), None
patent: 2001-194299 (2001-07-01), None
patent: 2001-352121 (2001-12-01), None
patent: 2004-333337 (2004-11-01), None
International Search Report dated Sep. 7, 2005.
T. Goto: “Construction of Dynamic Measurement Method of Plasma- Enhancement Surface Reaction Wavelength Femtosecond Fiber Laser.”, Monbukagakusho Kagaku Kenkyuhi Hojokin Kenkyu Seika Hokokusho, No. 15206012, pp. 28-32, Mar. 2005.
G. Stewart, K. Atherton and B. Culshaw; “Cavity-Enhanced Spectroscopy in Fiber Cavities.”, Optic Letters. vol. 29, No. 5, pp. 442-444, Mar. 2004.

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