Diffraction losses for symmetrically tilted plane reflectors in open resonators

Comparison of the Percent Power Loss per Transit as Computed by Ogura et al.¹⁸ and This Work^a

a For N ≤ 20 our results are about twice those of Ogura et al.,8 while for N large Ogura et al. give asymptotic power loss proportional to N^0.5.

Unperturbed P₀ and Perturbed P (% Power Loss per Transit) and Relative Power Loss Increase P/P₀ at N = 19.8 is Shown for the TEM₀, TEM₁, TEM₂, and TEM₃ Modes for Circular Disks Tilted at α = 0.18 Sec of Arc^a

a The lower-order modes have a relatively higher increased power loss. For the He–Ne laser line at 6328 Å with L = 200 cm and α = 1 cm, neglecting other losses, the gain of 6% per transit is still sufficient to maintain oscillation.

Table I

Comparison of the Percent Power Loss per Transit as Computed by Ogura et al.¹⁸ and This Work^a

a For N ≤ 20 our results are about twice those of Ogura et al.,8 while for N large Ogura et al. give asymptotic power loss proportional to N^0.5.

Table II

Unperturbed P₀ and Perturbed P (% Power Loss per Transit) and Relative Power Loss Increase P/P₀ at N = 19.8 is Shown for the TEM₀, TEM₁, TEM₂, and TEM₃ Modes for Circular Disks Tilted at α = 0.18 Sec of Arc^a

a The lower-order modes have a relatively higher increased power loss. For the He–Ne laser line at 6328 Å with L = 200 cm and α = 1 cm, neglecting other losses, the gain of 6% per transit is still sufficient to maintain oscillation.