Stable and tunable performance of ultra-narrow bandpass and high edge slope dichroic optical filters

Markus Fredell; Thomas Rahmlow Jr.; William Cote; Robert Mann; Robert Johnson Jr.

doi:10.1117/12.2547866

2 March 2020 Stable and tunable performance of ultra-narrow bandpass and high edge slope dichroic optical filters

Markus Fredell, Thomas Rahmlow Jr., William Cote, Robert Mann, Robert Johnson Jr.

Proceedings Volume 11272, Free-Space Laser Communications XXXII; 112721F (2020) https://doi.org/10.1117/12.2547866
Event: SPIE LASE, 2020, San Francisco, California, United States

Abstract

Laser based applications including optical communications, LIDAR and Raman spectroscopy benefit from ultra-narrow (< 1.0 nm) bandpass and high edge slope dichroic optical filters by rejecting off-band ambient and scattered light. However, applications for these filters are limited by shifts in wavelength due to temperature and angle of incidence, system f-number, doppler shift and pointing error of the gimbal as well as the stability of the source. Passive design techniques such as athermalization, use of high refractive index materials and widening the passband are compared with active tuning options. Adding thermal or tilt tuning can expand the operational range of the filter and mitigate the compromise to signal to noise which follows from widening the passband.

Citation Download Citation

Markus Fredell, Thomas Rahmlow Jr., William Cote, Robert Mann, and Robert Johnson Jr. "Stable and tunable performance of ultra-narrow bandpass and high edge slope dichroic optical filters", Proc. SPIE 11272, Free-Space Laser Communications XXXII, 112721F (2 March 2020); https://doi.org/10.1117/12.2547866

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available