... range

The near-IR wavebands are referred to as J-band ( $1.3~\rm\mu m\Leftrightarrow 2.3\times10^{14}$ Hz), H-band ( $1.65~\rm\mu m\Leftrightarrow 1.8\times10^{14}$ Hz), K-band ( $2.2~\rm\mu m\Leftrightarrow 1.4\times10^{14}$ Hz), L-band ( $3.8~\rm\mu m\Leftrightarrow 7.9\times10^{13}$ Hz), and M-band ( $4.5~\rm\mu m\Leftrightarrow 6.7\times10^{13}$ Hz). Mid-IR wavebands are referred to as N-band ( $8-13~\rm\mu m\Leftrightarrow~ \sim\!3\times10^{13}$ Hz) and Q-band ( $16{-}25~\rm\mu m\Leftrightarrow~ \sim\!1.5\times10^{13}$ Hz).

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