Application of an InGaAsP diode laser to probe photodissociation dynamics: I* quantum yields from n- and i-C3F7I and CH3I by laser gain vs absorption spectroscopy
- 15 February 1986
- journal article
- research article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 84 (4), 2143-2149
- https://doi.org/10.1063/1.450375
Abstract
A room temperature heterostructure InGaAsP laser diode operating at 1315 nm is employed for the first time for detection of I*(2P1/2) and I(2P3/2) atoms. The cw diode probe laser is used to study I* yields in the photodissociation of n‐ and i‐C3F7I and CH3I by the new technique of time‐resolved laser gain vs absorption spectroscopy. Preliminary quantum yields determined at 266 nm for n‐C3F7I, i‐C3F7I, and CH3I are 102±4%, 102±7%, and 73±4%, respectively. With further refinements to the diode laser set‐up, highly accurate quantum yields will be possible.Keywords
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