Single-pulse laser-induced OH fluorescence in an atmospheric flame, spatially resolved with a diode array detector.

نویسندگان

  • M Aldén
  • H Edner
  • G Holmstedt
  • S Svanberg
  • T Högberg
چکیده

Laser-induced fluorescence measurements of OH have been performed in an atmospheric stoichiometric CH(4)/air flame and in a highly sooting propane flame. The measurements were realized with a single 6-nsec pulse from a frequency-doubled dye laser pumped by a Nd:YAG laser and with a spatial resolution of ~25 microm. This was achieved by imaging through a suitably chosen filter set a section of the laser beam onto a gated and intensified diode array.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Simultaneous multiple species detection in a flame using laser-induced fluorescence.

An approach for simultaneous detection of NO, OH and O in flames using laser-induced fluorescence is presented. The technique is based on spectral coincidences using a Nd:YAG-based laser system producing a frequency-doubled and frequency-mixed laser beam at 287 and 226 nm, respectively. The possibility of making spatially resolved measurements using a diode-array detector was also investigated....

متن کامل

Spatially resolved temperature measurements in a flame using laser-excited two-line atomic fluorescence and diode-array detection.

Spatially resolved temperature measurements in a CH(4)-air flame have been achieved using two-line laser-induced fluorescence from indium atoms seeded to the flame.

متن کامل

Spatially resolved flow velocity measurements using laser-induced fluorescence from a pulsed laser.

We describe how spatially resolved velocity measurements can be acquired using a pulse-amplified single-mode cw laser with a potential of single-shot measurements. The laser beam was tuned to the point of maximum slope of a Doppler-broadened absorption profile of I(2), which was seeded into the flow. The beam was then split into two components and sent counterpropagating through the measurement...

متن کامل

Two-line atomic fluorescence flame thermometry using diode lasers

This paper reports on the first application of diode laser based LIF for pointwise temperature measurements in flames. The technique is based on two-line atomic fluorescence (TLAF) thermometry of indium atoms seeded at trace levels into the flame. Two novel extended cavity diode laser systems (ECDLs) were developed, providing tunable single-mode radiation around 410 and 451 nm, respectively, to...

متن کامل

Measurements of the indium hyperfine structure in an atmospheric-pressure flame by use of diode-laser-induced fluorescence.

We report on what we believe is the first demonstration of laser-induced fluorescence (LIF) in flames by use of diode lasers. Indium atoms seeded into an atmospheric-pressure flame at trace concentrations are excited by a blue GaN laser operating near 410 nm. The laser is mounted in an external-cavity configuration, and the hyperfine spectrum of the 5(2)P1/2 --> 6(2)S1/2 transition is captured ...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:
  • Applied optics

دوره 21 7  شماره 

صفحات  -

تاریخ انتشار 1982