Fundamentals of Optomechanics

Mueller polarimetry for quantifying the stress optic coefficient in the infrared

“…The published N-BK7 value measured at visible wavelengths is 2.77 [T P a] −1 ± 3%. [1][2][3] This agreement validates the experimental Mueller matrix imaging methods and supports the common assumption of minor wavelength dependence of the stress optic coefficient.…”

Multipolar Conversion Induced Subwavelength High‐Q Kerker Supermodes with Unidirectional Radiations

“…Relying on this connection and generalized Kerker effects of interferences among different multipoles, we synchronize both outstanding features of high-Q factor and unidirectional radiation into one subwavelength supermode. The implications of our study are not confined to optics and photonics, and can potentially shed new light on coupling between resonances of mechanical, phononic, electronic or other hybrid natures.The elegant model of two-mode coupling has been serving as one of the most fundamental frameworks for different branches of physics and many other interdisciplinary fields [1][2][3][4][5][6][7][8]. This model is generically related to lots of exotic phenomena including Fano resonances [9, 10], electromagnetically induced transparencies [11,12], bound states in the continuum [13][14][15], scarred states in open systems [16,17], non-Hermitian and topological effects [18][19][20][21], and so on.…”

“…The elegant model of two-mode coupling has been serving as one of the most fundamental frameworks for different branches of physics and many other interdisciplinary fields [1][2][3][4][5][6][7][8]. This model is generically related to lots of exotic phenomena including Fano resonances [9, 10], electromagnetically induced transparencies [11,12], bound states in the continuum [13][14][15], scarred states in open systems [16,17], non-Hermitian and topological effects [18][19][20][21], and so on.…”

“…Up to now, we have already obtained supermodes of simultaneous high-Q factors and subwavelength mode volumes with symmetric dielectric rods. Besides high-Q factors and sub- wavelength mode volumes, for many applications relying on nanoscale elements such as low-threshold lasers, antennas, sensors and single-photon sources [7,8], modes with asymmetrically directional radiation patterns are even more desired. This leads to a fundamental but also technologically interesting question: is it feasible to synchronize all three desirable features of sub-wavelength mode volume, high-Q factor and unidirectional far-field radiation within one nanoscale resonator?…”

Split achromatic doublet problem and lens element centering in a drop-in barrel

“…There are a variety of methods for precision mounting of lens elements. [1][2][3][4][5][6] However, precision lens mounting often leads to higher lens system cost when a few systems need to be manufactured. For example, the so called "poker-chip" method 3 requires individually mounting and centering the lens elements in sub cells that are precision machined to fit into the lens barrel.…”