An immersion grating with high refractive index n increases spectral resolution n-fold over that of a surface reflection grating of equal length.
© 1993 Optical Society of America
Original Manuscript: September 2, 1992
Published: March 1, 1993
Günter Wiedemann and Donald E. Jennings, "Immersion grating for infrared astronomy," Appl. Opt. 32, 1176-1178 (1993)