Beam adjectives are listed in this post. Each word below can often be found in front of the noun beam in the same sentence. This reference page can help answer the question what are some adjectives commonly used for describing BEAM.
bent, big, blinding, blue, bright, brighter, brightest, brilliant, broad, broken, burning, central, cheerful, cheering, clear, coherent, collimated, common, concentrated, concrete, continuous, curved, day, dazzling
different, diffracted, direct, earliest, early, electronic, entire, equal, eternal, external, faint, fatal, feeble, first, fixed, focused, foot, full, gaussian, genial, gentle, glorious, golden, great
heavenly, heavy, high, horizontal, huge, illuminating, inch, incoming, infrared, intense, invisible, larboard, large, laser, last, light, little, long, low, lower, lunar, main, massive, maximum
metal, molecular, more, narrow, new, noontide, oaken, old, optical, ordinary, original, other, overhead, own, pale, parallel, polarized, port, powerful, primary, proton, pure, radiant, ray
rectangular, red, refracted, same, second, shaped, silvery, simple, single, slanting, slender, small, soft, solar, solid, square, starboard, steady, straight, strong, sudden, sun, sunny, supported
supporting, thick, thin, tight, tiny, top, transient, transmitted, uniform, upper, upright, upward, vertical, warm, weak, white, whole, wide, wooden, yellow
Hope this word list had the adjective used with beam you were looking for. Additional describing words / adjectives that describe / adjectives of various nouns can be found in the other pages on this website.