Skip to main content
Chemistry LibreTexts

Solid State Lasers

  • Page ID
    74681
  • \( \newcommand{\vecs}[1]{\overset { \scriptstyle \rightharpoonup} {\mathbf{#1}} } \) \( \newcommand{\vecd}[1]{\overset{-\!-\!\rightharpoonup}{\vphantom{a}\smash {#1}}} \)\(\newcommand{\id}{\mathrm{id}}\) \( \newcommand{\Span}{\mathrm{span}}\) \( \newcommand{\kernel}{\mathrm{null}\,}\) \( \newcommand{\range}{\mathrm{range}\,}\) \( \newcommand{\RealPart}{\mathrm{Re}}\) \( \newcommand{\ImaginaryPart}{\mathrm{Im}}\) \( \newcommand{\Argument}{\mathrm{Arg}}\) \( \newcommand{\norm}[1]{\| #1 \|}\) \( \newcommand{\inner}[2]{\langle #1, #2 \rangle}\) \( \newcommand{\Span}{\mathrm{span}}\) \(\newcommand{\id}{\mathrm{id}}\) \( \newcommand{\Span}{\mathrm{span}}\) \( \newcommand{\kernel}{\mathrm{null}\,}\) \( \newcommand{\range}{\mathrm{range}\,}\) \( \newcommand{\RealPart}{\mathrm{Re}}\) \( \newcommand{\ImaginaryPart}{\mathrm{Im}}\) \( \newcommand{\Argument}{\mathrm{Arg}}\) \( \newcommand{\norm}[1]{\| #1 \|}\) \( \newcommand{\inner}[2]{\langle #1, #2 \rangle}\) \( \newcommand{\Span}{\mathrm{span}}\)\(\newcommand{\AA}{\unicode[.8,0]{x212B}}\)

    • Nd:YAG and Ruby are examples of solid-state laser systems
    • A flashlamp is used to excite (or “pump”) the gain medium in these lasers
    • Cr3+ ions in ruby undergo transitions to produce lasing in a Ruby laser
    • Nd3+ ions in a yttrium aluminum garnet (YAG) matrix are the optically active species in a Nd:YAG laser
    • Transitions in ruby occur mainly between three levels, whereas Nd:YAG is referred to as a 4-level system (see the energy level diagram, below).
    • The fundamental lasing transitions are at 694 nm and 1064 nm for Ruby and Nd:YAG lasers, respectively.

    four level energy diagram.PNG

    Four-level energy diagram. Simplified diagram showing transitions for Nd3+ in a Nd:YAG laser.


    This page titled Solid State Lasers is shared under a CC BY-NC-SA 4.0 license and was authored, remixed, and/or curated by Carol Korzeniewski via source content that was edited to the style and standards of the LibreTexts platform; a detailed edit history is available upon request.