Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Broadband laser enhanced dual-beam interferometry

Not Accessible

Your library or personal account may give you access

Abstract

We demonstrate a dual-beam, balanced detector approach, compatible with commercial Fourier transform infrared spectrometers that provide a single modulated output. Implemented with a near-IR mode-locked fiber laser source and an external broadband polarizing beamsplitter, the dual-beam method provides relative intensity noise reduction and real-time baseline drift cancellation. Noise levels within a factor of three above the shot noise limit (using 0.6 mW of optical power) are demonstrated for the weak second overtone of CO. The method should be particularly well suited for applications like broadband spectroscopy using a large fraction of the supercontinuum generated in a highly nonlinear fiber, and attenuated reflection spectroscopy, for which extreme pathlength enhancement is challenging.

©2012 Optical Society of America

Full Article  |  PDF Article
More Like This
Adaptive dual-comb spectroscopy in the green region

T. Ideguchi, A. Poisson, G. Guelachvili, T. W. Hänsch, and N. Picqué
Opt. Lett. 37(23) 4847-4849 (2012)

Pulse synthesis in the single-cycle regime from independent mode-locked lasers using attosecond-precision feedback

J. A. Cox, W. P. Putnam, A. Sell, A. Leitenstorfer, and F. X. Kärtner
Opt. Lett. 37(17) 3579-3581 (2012)

Direct-comb molecular spectroscopy with accurate, resolved comb teeth over 43 THz

A. M. Zolot, F. R. Giorgetta, E. Baumann, J. W. Nicholson, W. C. Swann, I. Coddington, and N. R. Newbury
Opt. Lett. 37(4) 638-640 (2012)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (2)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (2)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved