Measurement of the subnanosecond, nonradiative relaxation time from excited states of Nd sup 3+ in a Nd:YAG crystal

Journal Article · Wed Feb 28 23:00:00 EST 1990 · Optics Letters; (USA)

DOI:https://doi.org/10.1364/OL.15.000282· OSTI ID:6908932

Cruz, J; Giuliani, G; van Driel, H ^[1]

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1. Department of Physics, University of Toronto, Toronto, Ontario M5S 1A7, Canada (CA)

We have time resolved the nonradiative relaxation from the {sup 4}{ital G}{sub 7/2} manifold to the upper laser level (for {Sigma}=1.06 {mu}m) of Nd{sup 3+} in a Nd:YAG crystal. This has been performed by monitoring the onset of gain for the associated {sup 4}{ital F}{sub 3/2}--{sup 4}{ital I}{sub 11/2} transition following excitation of the {sup 4}{ital G}{sub 7/2} pump band by a 40-psec, 0.53-{mu}m pump pulse. The nonradiative relaxation time was found to be 470{plus minus}60 psec at room temperature and no shorter than 400 psec at 440 K.

• OSTI ID: 6908932
• Journal Information: Optics Letters; (USA), Journal Name: Optics Letters; (USA) Vol. 15:5; ISSN 0146-9592; ISSN OPLED
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
426002* -- Engineering-- Lasers & Masers-- (1990-)
AMPLIFICATION
CHARGED PARTICLES
DE-EXCITATION
ENERGY LEVELS
ENERGY TRANSFER
ENERGY-LEVEL TRANSITIONS
EXCITED STATES
GAIN
IONS
KINETICS
LASERS
MODE LOCKING
NEODYMIUM IONS
NEODYMIUM LASERS
PUMPING
RADIATIONLESS DECAY
RELAXATION TIME
SOLID STATE LASERS