US 11,923,101 B2
Optical tweezer phonon laser
Mishkatul Bhattacharya, Rochester, NY (US); and Anthony Nickolas Vamivakas, Rochester, NY (US)
Assigned to Rochester Institute of Technology, Rochester, NY (US); and University of Rochester, Rochester, NY (US)
Filed by Mishkatul Bhattacharya, Rochester, NY (US); and Anthony Nickolas Vamivakas, Rochester, NY (US)
Filed on May 14, 2021, as Appl. No. 17/320,708.
Claims priority of provisional application 63/024,884, filed on May 14, 2020.
Prior Publication US 2021/0358651 A1, Nov. 18, 2021
Int. Cl. G21K 1/00 (2006.01); G02B 27/28 (2006.01); G02F 1/01 (2006.01)
CPC G21K 1/006 (2013.01) [G02B 27/283 (2013.01); G02F 1/0123 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A single-beam optical tweezer phonon laser comprising:
a trap beam and a probe beam in optical communication with a first polarizing beam splitter configured to provide a single collinear beam without interference between the trap beam and probe beam;
a second polarizing beam splitter configured to isolate the probe beam from the trap beam;
a first focusing lens;
a second focusing lens;
a mechanical oscillator trap disposed between the first and second focusing lenses, wherein the lenses are disposed between the beam splitters, and the lenses, beam splitters and trap are in optical alignment with the single beam;
a beam dump downstream of the beam splitters and in optical alignment with the trap beam;
a detector in optical communication with the isolated probe beam configured to provide position information of a mechanical oscillator levitated within the mechanical oscillator trap;
an electro-optic modulator controlling the intensity of the trap beam; and
a feedback loop in electrical communication with the electro-optic modulator and the detector, wherein the feedback loop is configured to simultaneously supply an amplification signal and a cooling signal representing respectively an amplification force linear in the mechanical oscillator momentum and a cooling force nonlinear in the mechanical oscillator variable position and linear in the momentum generated from the position information to the electro-optic modulator to generate coherent motion of the mechanical oscillator.