  We demonstrate a method to double the collection efficiency in Laser Tweezers
Raman Spectroscopy (LTRS) by collecting both the forward and back-scattered
light in a single-shot multitrack measurement. Our method can collect signals
at different sample volumes, granting both the pinpoint spatial selectivity of
confocal Raman and the bulk sensitivity of non-confocal Raman simultaneously.
Further, we display that our approach allows for reduced detector integration
time and laser power. Thus, our method will enable the monitoring of biological
samples sensitive to high intensities for longer times. Additionally, we
demonstrate that by a simple modification, we can add polarization sensitivity
and retrieve extra biochemical information.
